boot.enableContainers

Whether to enable support for nixos containers.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
boot.binfmtMiscRegistrations

Extra binary formats to register with the kernel. See https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html for more details.

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.fixBinary

Whether to open the interpreter file as soon as the registration is loaded, rather than waiting for a relevant file to be invoked.

See the description of the 'F' flag in the kernel docs for more details.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.interpreter

The interpreter to invoke to run the program.

Note that the actual registration will point to /run/binfmt/${name}, so the kernel interpreter length limit doesn't apply.

Type: path

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.magicOrExtension

The magic number or extension to match on.

Type: string

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.mask

A mask to be ANDed with the byte sequence of the file before matching

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.matchCredentials

Whether to launch with the credentials and security token of the binary, not the interpreter (e.g. setuid bit).

See the description of the 'C' flag in the kernel docs for more details.

Implies/requires openBinary = true.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.offset

The byte offset of the magic number used for recognition.

Type: null or signed integer

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.openBinary

Whether to pass the binary to the interpreter as an open file descriptor, instead of a path.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.preserveArgvZero

Whether to pass the original argv[0] to the interpreter.

See the description of the 'P' flag in the kernel docs for more details;

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.binfmtMiscRegistrations.<name>.recognitionType

Whether to recognize executables by magic number or extension.

Type: one of "magic", "extension"

Default: "magic"

Declared by:

<nixpkgs/nixos/modules/system/boot/binfmt.nix>
boot.blacklistedKernelModules

List of names of kernel modules that should not be loaded automatically by the hardware probing code.

Type: list of strings

Default: [ ]

Example: [ "cirrusfb" "i2c_piix4" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/modprobe.nix>
boot.cleanTmpDir

Whether to delete all files in /tmp during boot.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/tmp.nix>
boot.consoleLogLevel

The kernel console loglevel. All Kernel Messages with a log level smaller than this setting will be printed to the console.

Type: signed integer

Default: 4

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.crashDump.enable

If enabled, NixOS will set up a kernel that will boot on crash, and leave the user in systemd rescue to be able to save the crashed kernel dump at /proc/vmcore. It also activates the NMI watchdog.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/misc/crashdump.nix>
boot.crashDump.kernelParams

Parameters that will be passed to the kernel kexec-ed on crash.

Type: list of strings

Default: [ "1" "boot.shell_on_fail" ]

Declared by:

<nixpkgs/nixos/modules/misc/crashdump.nix>
boot.crashDump.reservedMemory

The amount of memory reserved for the crashdump kernel. If you choose a too high value, dmesg will mention "crashkernel reservation failed".

Type: unspecified

Default: "128M"

Declared by:

<nixpkgs/nixos/modules/misc/crashdump.nix>
boot.devShmSize

Size limit for the /dev/shm tmpfs. Look at mount(8), tmpfs size option, for the accepted syntax.

Type: string

Default: "50%"

Example: "256m"

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-2.nix>
boot.devSize

Size limit for the /dev tmpfs. Look at mount(8), tmpfs size option, for the accepted syntax.

Type: string

Default: "5%"

Example: "32m"

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-2.nix>
boot.earlyVconsoleSetup

Enable setting font as early as possible (in initrd).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/kbd.nix>
boot.extraModprobeConfig

Any additional configuration to be appended to the generated modprobe.conf. This is typically used to specify module options. See modprobe.conf(5) for details.

Type: strings concatenated with "\n"

Default: ""

Example:

''
options parport_pc io=0x378 irq=7 dma=1
''

Declared by:

<nixpkgs/nixos/modules/system/boot/modprobe.nix>
boot.extraModulePackages

A list of additional packages supplying kernel modules.

Type: list of packages

Default: [ ]

Example:

[ pkgs.linuxPackages.nvidia_x11 ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.extraTTYs

Tty (virtual console) devices, in addition to the consoles on which mingetty and syslogd run, that must be initialised. Only useful if you have some program that you want to run on some fixed console. For example, the NixOS installation CD opens the manual in a web browser on console 7, so it sets boot.extraTTYs to ["tty7"].

Type: list of strings

Default: [ ]

Example: [ "tty8" "tty9" ]

Declared by:

<nixpkgs/nixos/modules/tasks/kbd.nix>
boot.growPartition

Whether to enable grow the root partition on boot.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/system/boot/grow-partition.nix>
boot.hardwareScan

Whether to try to load kernel modules for all detected hardware. Usually this does a good job of providing you with the modules you need, but sometimes it can crash the system or cause other nasty effects.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/hardware/udev.nix>
boot.initrd.availableKernelModules

The set of kernel modules in the initial ramdisk used during the boot process. This set must include all modules necessary for mounting the root device. That is, it should include modules for the physical device (e.g., SCSI drivers) and for the file system (e.g., ext3). The set specified here is automatically closed under the module dependency relation, i.e., all dependencies of the modules list here are included automatically. The modules listed here are available in the initrd, but are only loaded on demand (e.g., the ext3 module is loaded automatically when an ext3 filesystem is mounted, and modules for PCI devices are loaded when they match the PCI ID of a device in your system). To force a module to be loaded, include it in boot.initrd.kernelModules.

Type: list of strings

Default: [ ]

Example: [ "sata_nv" "ext3" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.initrd.checkJournalingFS

Whether to run fsck on journaling filesystems such as ext3.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.kernelModules

List of modules that are always loaded by the initrd.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.initrd.luks.cryptoModules

A list of cryptographic kernel modules needed to decrypt the root device(s). The default includes all common modules.

Type: list of strings

Default: [ "aes" "aes_generic" "blowfish" "twofish" "serpent" "cbc" "xts" "lrw" "sha1" "sha256" "sha512" "aes_x86_64" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices

The encrypted disk that should be opened before the root filesystem is mounted. Both LVM-over-LUKS and LUKS-over-LVM setups are supported. The unencrypted devices can be accessed as /dev/mapper/name.

Type: list or attribute set of submodules

Default: { }

Example: { luksroot = { device = "/dev/disk/by-uuid/430e9eff-d852-4f68-aa3b-2fa3599ebe08"; } ; }

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.allowDiscards

Whether to allow TRIM requests to the underlying device. This option has security implications; please read the LUKS documentation before activating it.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.device

Path of the underlying encrypted block device.

Type: string

Example: "/dev/disk/by-uuid/430e9eff-d852-4f68-aa3b-2fa3599ebe08"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.fallbackToPassword

Whether to fallback to interactive passphrase prompt if the keyfile cannot be found. This will prevent unattended boot should the keyfile go missing.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.header

The name of the file or block device that should be used as header for the encrypted device.

Type: null or string

Default: null

Example: "/root/header.img"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.keyFile

The name of the file (can be a raw device or a partition) that should be used as the decryption key for the encrypted device. If not specified, you will be prompted for a passphrase instead.

Type: null or string

Default: null

Example: "/dev/sdb1"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.keyFileOffset

The offset of the key file. Use this in combination with keyFileSize to use part of a file as key file (often the case if a raw device or partition is used as a key file). If not specified, the key begins at the first byte of keyFile.

Type: null or signed integer

Default: null

Example: 4096

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.keyFileSize

The size of the key file. Use this if only the beginning of the key file should be used as a key (often the case if a raw device or partition is used as key file). If not specified, the whole keyFile will be used decryption, instead of just the first keyFileSize bytes.

Type: null or signed integer

Default: null

Example: 4096

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.preLVM

Whether the luksOpen will be attempted before LVM scan or after it.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey

The options to use for this LUKS device in Yubikey-PBA. If null (the default), Yubikey-PBA will be disabled for this device.

Type: null or submodule

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.gracePeriod

Time in seconds to wait for the Yubikey.

Type: signed integer

Default: 10

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.iterationStep

How much the iteration count for PBKDF2 is increased at each successful authentication.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.keyLength

Length of the LUKS slot key derived with PBKDF2 in byte.

Type: signed integer

Default: 64

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.saltLength

Length of the new salt in byte (64 is the effective maximum).

Type: signed integer

Default: 16

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.slot

Which slot on the Yubikey to challenge.

Type: signed integer

Default: 2

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.storage.device

An unencrypted device that will temporarily be mounted in stage-1. Must contain the current salt to create the challenge for this LUKS device.

Type: path

Default: "/dev/sda1"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.storage.fsType

The filesystem of the unencrypted device.

Type: string

Default: "vfat"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.storage.path

Absolute path of the salt on the unencrypted device with that device's root directory as "/".

Type: string

Default: "/crypt-storage/default"

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.devices.<name?>.yubikey.twoFactor

Whether to use a passphrase and a Yubikey (true), or only a Yubikey (false).

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.mitigateDMAAttacks

Unless enabled, encryption keys can be easily recovered by an attacker with physical access to any machine with PCMCIA, ExpressCard, ThunderBolt or FireWire port. More information is available at http://en.wikipedia.org/wiki/DMA_attack.

This option blacklists FireWire drivers, but doesn't remove them. You can manually load the drivers if you need to use a FireWire device, but don't forget to unload them!

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.reusePassphrases

When opening a new LUKS device try reusing last successful passphrase.

Useful for mounting a number of devices that use the same passphrase without retyping it several times.

Such setup can be useful if you use cryptsetup luksSuspend. Different LUKS devices will still have different master keys even when using the same passphrase.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.luks.yubikeySupport

Enables support for authenticating with a Yubikey on LUKS devices. See the NixOS wiki for information on how to properly setup a LUKS device and a Yubikey to work with this feature.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/luksroot.nix>
boot.initrd.mdadmConf

Contents of /etc/mdadm.conf in stage 1.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.network.enable

Add network connectivity support to initrd. The network may be configured using the ip kernel parameter, as described in the kernel documentation. Otherwise, if networking.useDHCP is enabled, an IP address is acquired using DHCP.

You should add the module(s) required for your network card to boot.initrd.availableKernelModules. lspci -v -s <ethernet controller> will tell you which.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-network.nix>
boot.initrd.network.postCommands

Shell commands to be executed after stage 1 of the boot has initialised the network.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-network.nix>
boot.initrd.network.ssh.enable

Start SSH service during initrd boot. It can be used to debug failing boot on a remote server, enter pasphrase for an encrypted partition etc. Service is killed when stage-1 boot is finished.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.authorizedKeys

Authorized keys for the root user on initrd.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.hostDSSKey

DSS SSH private key file in the Dropbear format.

WARNING: Unless your bootloader supports initrd secrets, this key is contained insecurely in the global Nix store. Do NOT use your regular SSH host private keys for this purpose or you'll expose them to regular users!

Type: null or path

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.hostECDSAKey

ECDSA SSH private key file in the Dropbear format.

WARNING: Unless your bootloader supports initrd secrets, this key is contained insecurely in the global Nix store. Do NOT use your regular SSH host private keys for this purpose or you'll expose them to regular users!

Type: null or path

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.hostRSAKey

RSA SSH private key file in the Dropbear format.

WARNING: Unless your bootloader supports initrd secrets, this key is contained insecurely in the global Nix store. Do NOT use your regular SSH host private keys for this purpose or you'll expose them to regular users!

Type: null or path

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.port

Port on which SSH initrd service should listen.

Type: signed integer

Default: 22

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.ssh.shell

Login shell of the remote user. Can be used to limit actions user can do.

Type: string

Default: "/bin/ash"

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-ssh.nix>
boot.initrd.network.udhcpc.extraArgs

Additional command-line arguments passed verbatim to udhcpc if boot.initrd.network.enable and networking.useDHCP are enabled.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/initrd-network.nix>
boot.initrd.postDeviceCommands

Shell commands to be executed immediately after stage 1 of the boot has loaded kernel modules and created device nodes in /dev.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.postMountCommands

Shell commands to be executed immediately after the stage 1 filesystems have been mounted.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.preDeviceCommands

Shell commands to be executed before udev is started to create device nodes.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.preFailCommands

Shell commands to be executed before the failure prompt is shown.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.preLVMCommands

Shell commands to be executed immediately before LVM discovery.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.prepend

Other initrd files to prepend to the final initrd we are building.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.initrd.supportedFilesystems

Names of supported filesystem types in the initial ramdisk.

Type: list of strings

Default: [ ]

Example: [ "btrfs" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.isContainer

Whether this NixOS machine is a lightweight container running in another NixOS system.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
boot.kernel.sysctl

Runtime parameters of the Linux kernel, as set by sysctl(8). Note that sysctl parameters names must be enclosed in quotes (e.g. "vm.swappiness" instead of vm.swappiness). The value of each parameter may be a string, integer, boolean, or null (signifying the option will not appear at all).

Type: attribute set of sysctl option values

Default: { }

Example:

{ "net.ipv4.tcp_syncookies" = false; "vm.swappiness" = 60; }

Declared by:

<nixpkgs/nixos/modules/config/sysctl.nix>
boot.kernelModules

The set of kernel modules to be loaded in the second stage of the boot process. Note that modules that are needed to mount the root file system should be added to boot.initrd.availableKernelModules or boot.initrd.kernelModules.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.kernelPackages

This option allows you to override the Linux kernel used by NixOS. Since things like external kernel module packages are tied to the kernel you're using, it also overrides those. This option is a function that takes Nixpkgs as an argument (as a convenience), and returns an attribute set containing at the very least an attribute kernel. Additional attributes may be needed depending on your configuration. For instance, if you use the NVIDIA X driver, then it also needs to contain an attribute nvidia_x11.

Type: unspecified

Default: "pkgs.linuxPackages"

Example:

pkgs.linuxPackages_2_6_25

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.kernelParams

Parameters added to the kernel command line.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.kernelPatches

A list of additional patches to apply to the kernel.

Type: list of attribute sets

Default: [ ]

Example:

[ pkgs.kernelPatches.ubuntu_fan_4_4 ]

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.loader.efi.canTouchEfiVariables

Whether the installation process is allowed to modify EFI boot variables.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/efi.nix>
boot.loader.efi.efiSysMountPoint

Where the EFI System Partition is mounted.

Type: string

Default: "/boot"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/efi.nix>
boot.loader.generationsDir.enable

Whether to create symlinks to the system generations under /boot. When enabled, /boot/default/kernel, /boot/default/initrd, etc., are updated to point to the current generation's kernel image, initial RAM disk, and other bootstrap files.

This optional is not necessary with boot loaders such as GNU GRUB for which the menu is updated to point to the latest bootstrap files. However, it is needed for U-Boot on platforms where the boot command line is stored in flash memory rather than in a menu file.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/generations-dir/generations-dir.nix>
boot.loader.generationsDir.copyKernels

Whether copy the necessary boot files into /boot, so /nix/store is not needed by the boot loader.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/generations-dir/generations-dir.nix>
boot.loader.generic-extlinux-compatible.enable

Whether to generate an extlinux-compatible configuration file under /boot/extlinux.conf. For instance, U-Boot's generic distro boot support uses this file format.

See U-boot's documentation for more information.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/generic-extlinux-compatible>
boot.loader.generic-extlinux-compatible.configurationLimit

Maximum number of configurations in the boot menu.

Type: signed integer

Default: 20

Example: 10

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/generic-extlinux-compatible>
boot.loader.grub.enable

Whether to enable the GNU GRUB boot loader.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.enableCryptodisk

Enable support for encrypted partitions. GRUB should automatically unlock the correct encrypted partition and look for filesystems.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.backgroundColor

Background color to be used for GRUB to fill the areas the image isn't filling.

Note: This options has no effect for GRUB 1.

Type: null or Concatenated string

Default: null

Example: "#7EBAE4"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.configurationLimit

Maximum of configurations in boot menu. GRUB has problems when there are too many entries.

Type: signed integer

Default: 100

Example: 120

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.configurationName

GRUB entry name instead of default.

Type: string

Default: ""

Example: "Stable 2.6.21"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.copyKernels

Whether the GRUB menu builder should copy kernels and initial ramdisks to /boot. This is done automatically if /boot is on a different partition than /.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.default

Index of the default menu item to be booted.

Type: signed integer or string

Default: "0"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.device

The device on which the GRUB boot loader will be installed. The special value nodev means that a GRUB boot menu will be generated, but GRUB itself will not actually be installed. To install GRUB on multiple devices, use boot.loader.grub.devices.

Type: string

Default: ""

Example: "/dev/disk/by-id/wwn-0x500001234567890a"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.devices

The devices on which the boot loader, GRUB, will be installed. Can be used instead of device to install GRUB onto multiple devices.

Type: list of strings

Default: [ ]

Example: [ "/dev/disk/by-id/wwn-0x500001234567890a" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.efiInstallAsRemovable

Whether to invoke grub-install with --removable.

Unless you turn this on, GRUB will install itself somewhere in boot.loader.efi.efiSysMountPoint (exactly where depends on other config variables). If you've set boot.loader.efi.canTouchEfiVariables *AND* you are currently booted in UEFI mode, then GRUB will use efibootmgr to modify the boot order in the EFI variables of your firmware to include this location. If you are *not* booted in UEFI mode at the time GRUB is being installed, the NVRAM will not be modified, and your system will not find GRUB at boot time. However, GRUB will still return success so you may miss the warning that gets printed ("efibootmgr: EFI variables are not supported on this system.").

If you turn this feature on, GRUB will install itself in a special location within efiSysMountPoint (namely EFI/boot/boot$arch.efi) which the firmwares are hardcoded to try first, regardless of NVRAM EFI variables.

To summarize, turn this on if:

  • You are installing NixOS and want it to boot in UEFI mode, but you are currently booted in legacy mode

  • You want to make a drive that will boot regardless of the NVRAM state of the computer (like a USB "removable" drive)

  • You simply dislike the idea of depending on NVRAM state to make your drive bootable

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.efiSupport

Whether GRUB should be built with EFI support. EFI support is only available for GRUB v2. This option is ignored for GRUB v1.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraConfig

Additional GRUB commands inserted in the configuration file just before the menu entries.

Type: strings concatenated with "\n"

Default: ""

Example: "serial; terminal_output.serial"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraEntries

Any additional entries you want added to the GRUB boot menu.

Type: strings concatenated with "\n"

Default: ""

Example:

''
# GRUB 1 example (not GRUB 2 compatible)
title Windows
  chainloader (hd0,1)+1

# GRUB 2 example
menuentry "Windows 7" {
  chainloader (hd0,4)+1
}

# GRUB 2 with UEFI example, chainloading another distro
menuentry "Fedora" {
  set root=(hd1,1)
  chainloader /efi/fedora/grubx64.efi
}
''

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraEntriesBeforeNixOS

Whether extraEntries are included before the default option.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraFiles

A set of files to be copied to /boot. Each attribute name denotes the destination file name in /boot, while the corresponding attribute value specifies the source file.

Type: attribute set of paths

Default: { }

Example:

{ "memtest.bin" = "${pkgs.memtest86plus}/memtest.bin"; }

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraInitrd

The path to a second initramfs to be supplied to the kernel. This ramfs will not be copied to the store, so that it can contain secrets such as LUKS keyfiles or ssh keys. This implies that rolling back to a previous configuration won't rollback the state of this file.

Type: null or path

Default: null

Example: "/boot/extra_initramfs.gz"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraPerEntryConfig

Additional GRUB commands inserted in the configuration file at the start of each NixOS menu entry.

Type: strings concatenated with "\n"

Default: ""

Example: "root (hd0)"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.extraPrepareConfig

Additional bash commands to be run at the script that prepares the GRUB menu entries.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.font

Path to a TrueType, OpenType, or pf2 font to be used by Grub.

Type: null or path

Default: "\${pkgs.grub2}/share/grub/unicode.pf2"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.fontSize

Font size for the grub menu. Ignored unless font is set to a ttf or otf font.

Type: null or signed integer

Default: null

Example:

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.forceInstall

Whether to try and forcibly install GRUB even if problems are detected. It is not recommended to enable this unless you know what you are doing.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.fsIdentifier

Determines how GRUB will identify devices when generating the configuration file. A value of uuid / label signifies that grub will always resolve the uuid or label of the device before using it in the configuration. A value of provided means that GRUB will use the device name as show in df or mount. Note, zfs zpools / datasets are ignored and will always be mounted using their labels.

Type: one of "uuid", "label", "provided"

Default: "uuid"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.gfxmodeBios

The gfxmode to pass to GRUB when loading a graphical boot interface under BIOS.

Type: string

Default: "1024x768"

Example: "auto"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.gfxmodeEfi

The gfxmode to pass to GRUB when loading a graphical boot interface under EFI.

Type: string

Default: "auto"

Example: "1024x768"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.ipxe

Set of iPXE scripts available for booting from the GRUB boot menu.

Type: attribute set of path or strings

Default: { }

Example:

{ demo = ''
    #!ipxe
    dhcp
    chain http://boot.ipxe.org/demo/boot.php
  '';
}

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/ipxe.nix>
boot.loader.grub.memtest86.enable

Make Memtest86+, a memory testing program, available from the GRUB boot menu.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/memtest.nix>
boot.loader.grub.memtest86.params

Parameters added to the Memtest86+ command line. As of memtest86+ 5.01 the following list of (apparently undocumented) parameters are accepted:

  • console=..., set up a serial console. Examples: console=ttyS0, console=ttyS0,9600 or console=ttyS0,115200n8.

  • btrace, enable boot trace.

  • maxcpus=N, limit number of CPUs.

  • onepass, run one pass and exit if there are no errors.

  • tstlist=..., list of tests to run. Example: 0,1,2.

  • cpumask=..., set a CPU mask, to select CPUs to use for testing.

This list of command line options was obtained by reading the Memtest86+ source code.

Type: list of strings

Default: [ ]

Example: [ "console=ttyS0,115200" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/memtest.nix>
boot.loader.grub.mirroredBoots

Mirror the boot configuration to multiple partitions and install grub to the respective devices corresponding to those partitions.

Type: list of submodules

Default: [ ]

Example: [ { devices = [ "/dev/disk/by-id/wwn-0x500001234567890a" ] ; path = "/boot1"; } { devices = [ "/dev/disk/by-id/wwn-0x500009876543210a" ] ; path = "/boot2"; } ]

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.mirroredBoots.*.devices

The path to the devices which will have the GRUB MBR written. Note these are typically device paths and not paths to partitions.

Type: list of strings

Default: [ ]

Example: [ "/dev/disk/by-id/wwn-0x500001234567890a" "/dev/disk/by-id/wwn-0x500009876543210a" ]

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.mirroredBoots.*.efiBootloaderId

The id of the bootloader to store in efi nvram. The default is to name it NixOS and append the path or efiSysMountPoint. This is only used if boot.loader.efi.canTouchEfiVariables is true.

Type: null or string

Default: null

Example: "NixOS-fsid"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.mirroredBoots.*.efiSysMountPoint

The path to the efi system mount point. Usually this is the same partition as the above path and can be left as null.

Type: null or string

Default: null

Example: "/boot1/efi"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.mirroredBoots.*.path

The path to the boot directory where GRUB will be written. Generally this boot path should double as an EFI path.

Type: string

Example: "/boot1"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.splashImage

Background image used for GRUB. Set to null to run GRUB in text mode.

Note: For grub 1: It must be a 640x480, 14-colour image in XPM format, optionally compressed with gzip or bzip2.
Note: For grub 2: File must be one of .png, .tga, .jpg, or .jpeg. JPEG images must not be progressive. The image will be scaled if necessary to fit the screen.

Type: null or path

Example:

./my-background.png

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.splashMode

Whether to stretch the image or show the image in the top-left corner unstretched.

Note: This options has no effect for GRUB 1.

Type: one of "normal", "stretch"

Default: "stretch"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.storePath

Path to the Nix store when looking for kernels at boot. Only makes sense when copyKernels is false.

Type: string

Default: "/nix/store"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.trustedBoot.enable

Enable trusted boot. GRUB will measure all critical components during the boot process to offer TCG (TPM) support.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.trustedBoot.isHPLaptop

Use a special version of TrustedGRUB that is needed by some HP laptops and works only for the HP laptops.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.trustedBoot.systemHasTPM

Assertion that the target system has an activated TPM. It is a safety check before allowing the activation of 'trustedBoot.enable'. TrustedBoot WILL FAIL TO BOOT YOUR SYSTEM if no TPM is available.

Type: Concatenated string

Default: ""

Example: "YES_TPM_is_activated"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.useOSProber

If set to true, append entries for other OSs detected by os-prober.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.version

The version of GRUB to use: 1 for GRUB Legacy (versions 0.9x), or 2 (the default) for GRUB 2.

Type: signed integer

Default: 2

Example: 1

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.grub.zfsSupport

Whether GRUB should be built against libzfs. ZFS support is only available for GRUB v2. This option is ignored for GRUB v1.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix>
boot.loader.initScript.enable

Some systems require a /sbin/init script which is started. Or having it makes starting NixOS easier. This applies to some kind of hosting services and user mode linux.

Additionally this script will create /boot/init-other-configurations-contents.txt containing contents of remaining configurations. You can copy paste them into /sbin/init manually running a rescue system or such.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/init-script/init-script.nix>
boot.loader.raspberryPi.enable

Whether to create files with the system generations in /boot. /boot/old will hold files from old generations.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/raspberrypi/raspberrypi.nix>
boot.loader.raspberryPi.firmwareConfig

Extra options that will be appended to /boot/config.txt file. For possible values, see: https://www.raspberrypi.org/documentation/configuration/config-txt/

Type: null or Concatenated string

Default: null

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/raspberrypi/raspberrypi.nix>
boot.loader.raspberryPi.uboot.enable

Enable using uboot as bootmanager for the raspberry pi.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/raspberrypi/raspberrypi.nix>
boot.loader.raspberryPi.uboot.configurationLimit

Maximum number of configurations in the boot menu.

Type: signed integer

Default: 20

Example: 10

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/raspberrypi/raspberrypi.nix>
boot.loader.raspberryPi.version

Type: one of 1, 2, 3

Default: 2

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/raspberrypi/raspberrypi.nix>
boot.loader.systemd-boot.enable

Whether to enable the systemd-boot (formerly gummiboot) EFI boot manager

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix>
boot.loader.systemd-boot.consoleMode

The resolution of the console. The following values are valid:

  • "0": Standard UEFI 80x25 mode

  • "1": 80x50 mode, not supported by all devices

  • "2": The first non-standard mode provided by the device firmware, if any

  • "auto": Pick a suitable mode automatically using heuristics

  • "max": Pick the highest-numbered available mode

  • "keep": Keep the mode selected by firmware (the default)

Type: one of "0", "1", "2", "auto", "max", "keep"

Default: "keep"

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix>
boot.loader.systemd-boot.editor

Whether to allow editing the kernel command-line before boot. It is recommended to set this to false, as it allows gaining root access by passing init=/bin/sh as a kernel parameter. However, it is enabled by default for backwards compatibility.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix>
boot.loader.timeout

Timeout (in seconds) until loader boots the default menu item. Use null if the loader menu should be displayed indefinitely.

Type: null or signed integer

Default: 5

Declared by:

<nixpkgs/nixos/modules/system/boot/loader/loader.nix>
boot.plymouth.enable

Whether to enable Plymouth boot splash screen.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/system/boot/plymouth.nix>
boot.plymouth.logo

Logo which is displayed on the splash screen.

Type: path

Default:

''
pkgs.fetchurl {
          url = "https://nixos.org/logo/nixos-hires.png";
          sha256 = "1ivzgd7iz0i06y36p8m5w48fd8pjqwxhdaavc0pxs7w1g7mcy5si";
        }''

Declared by:

<nixpkgs/nixos/modules/system/boot/plymouth.nix>
boot.plymouth.theme

Splash screen theme.

Type: string

Default: "breeze"

Declared by:

<nixpkgs/nixos/modules/system/boot/plymouth.nix>
boot.plymouth.themePackages

Extra theme packages for plymouth.

Type: list of packages

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/boot/plymouth.nix>
boot.postBootCommands

Shell commands to be executed just before systemd is started.

Type: strings concatenated with "\n"

Default: ""

Example: "rm -f /var/log/messages"

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-2.nix>
boot.resumeDevice

Device for manual resume attempt during boot. This should be used primarily if you want to resume from file. If left empty, the swap partitions are used. Specify here the device where the file resides. You should also use boot.kernelParams to specify resume_offset.

Type: string

Default: ""

Example: "/dev/sda3"

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
boot.runSize

Size limit for the /run tmpfs. Look at mount(8), tmpfs size option, for the accepted syntax.

Type: string

Default: "25%"

Example: "256m"

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-2.nix>
boot.specialFileSystems.<name?>.device

Location of the device.

Type: null or string (with check: non-empty)

Default: null

Example: "/dev/sda"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
boot.specialFileSystems.<name?>.fsType

Type of the file system.

Type: string (with check: non-empty)

Default: "auto"

Example: "ext3"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
boot.specialFileSystems.<name?>.mountPoint

Location of the mounted the file system.

Type: string (with check: non-empty)

Example: "/mnt/usb"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
boot.specialFileSystems.<name?>.options

Options used to mount the file system.

Type: list of string (with check: non-empty)s

Default: [ "defaults" ]

Example: [ "data=journal" ]

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
boot.supportedFilesystems

Names of supported filesystem types.

Type: list of strings

Default: [ ]

Example: [ "btrfs" ]

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
boot.tmpOnTmpfs

Whether to mount a tmpfs on /tmp during boot.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/tmp.nix>
boot.vesa

Whether to activate VESA video mode on boot.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/kernel.nix>
boot.zfs.enableUnstable

Use the unstable zfs package. This might be an option, if the latest kernel is not yet supported by a published release of ZFS. Enabling this option will install a development version of ZFS on Linux. The version will have already passed an extensive test suite, but it is more likely to hit an undiscovered bug compared to running a released version of ZFS on Linux.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
boot.zfs.devNodes

Name of directory from which to import ZFS devices.

This should be a path under /dev containing stable names for all devices needed, as import may fail if device nodes are renamed concurrently with a device failing.

Type: path

Default: "/dev/disk/by-id"

Example: "/dev/disk/by-id"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
boot.zfs.extraPools

Name or GUID of extra ZFS pools that you wish to import during boot.

Usually this is not necessary. Instead, you should set the mountpoint property of ZFS filesystems to legacy and add the ZFS filesystems to NixOS's fileSystems option, which makes NixOS automatically import the associated pool.

However, in some cases (e.g. if you have many filesystems) it may be preferable to exclusively use ZFS commands to manage filesystems. If so, since NixOS/systemd will not be managing those filesystems, you will need to specify the ZFS pool here so that NixOS automatically imports it on every boot.

Type: list of strings

Default: [ ]

Example: [ "tank" "data" ]

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
boot.zfs.forceImportAll

Forcibly import all ZFS pool(s).

This is enabled by default for backwards compatibility purposes, but it is highly recommended to disable this option, as it bypasses some of the safeguards ZFS uses to protect your ZFS pools.

If you set this option to false and NixOS subsequently fails to import your non-root ZFS pool(s), you should manually import each pool with "zpool import -f <pool-name>", and then reboot. You should only need to do this once.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
boot.zfs.forceImportRoot

Forcibly import the ZFS root pool(s) during early boot.

This is enabled by default for backwards compatibility purposes, but it is highly recommended to disable this option, as it bypasses some of the safeguards ZFS uses to protect your ZFS pools.

If you set this option to false and NixOS subsequently fails to boot because it cannot import the root pool, you should boot with the zfs_force=1 option as a kernel parameter (e.g. by manually editing the kernel params in grub during boot). You should only need to do this once.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
boot.zfs.requestEncryptionCredentials

Request encryption keys or passwords for all encrypted datasets on import. Dataset encryption is only supported in zfsUnstable at the moment. For root pools the encryption key can be supplied via both an interactive prompt (keylocation=prompt) and from a file (keylocation=file://). Note that for data pools the encryption key can be only loaded from a file and not via interactive prompt since the import is processed in a background systemd service.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems/zfs.nix>
containers

A set of NixOS system configurations to be run as lightweight containers. Each container appears as a service container-name on the host system, allowing it to be started and stopped via systemctl.

Type: attribute set of submodules

Default: { }

Example:

{ webserver =
    { path = "/nix/var/nix/profiles/webserver";
    };
  database =
    { config =
        { config, pkgs, ... }:
        { services.postgresql.enable = true;
          services.postgresql.package = pkgs.postgresql96;

          system.stateVersion = "17.03";
        };
    };
}

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.enableTun

Allows the container to create and setup tunnel interfaces by granting the NET_ADMIN capability and enabling access to /dev/net/tun.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.additionalCapabilities

Grant additional capabilities to the container. See the capabilities(7) and systemd-nspawn(1) man pages for more information.

Type: list of strings

Default: [ ]

Example: [ "CAP_NET_ADMIN" "CAP_MKNOD" ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.allowedDevices

A list of device nodes to which the containers has access to.

Type: list of submodules

Default: [ ]

Example: [ { modifier = "rw"; node = "/dev/net/tun"; } ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.allowedDevices.*.modifier

Device node access modifier. Takes a combination r (read), w (write), and m (mknod). See the systemd.resource-control(5) man page for more information.

Type: string

Example: "rw"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.allowedDevices.*.node

Path to device node

Type: string

Example: "/dev/net/tun"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.autoStart

Whether the container is automatically started at boot-time.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.bindMounts

An extra list of directories that is bound to the container.

Type: list or attribute set of submodules

Default: { }

Example: { /home = { hostPath = "/home/alice"; isReadOnly = false; } ; }

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.bindMounts.<name?>.hostPath

Location of the host path to be mounted.

Type: null or string

Default: null

Example: "/home/alice"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.bindMounts.<name?>.isReadOnly

Determine whether the mounted path will be accessed in read-only mode.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.bindMounts.<name?>.mountPoint

Mount point on the container file system.

Type: string

Example: "/mnt/usb"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.config

A specification of the desired configuration of this container, as a NixOS module.

Type: Toplevel NixOS config

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraFlags

Extra flags passed to the systemd-nspawn command. See systemd-nspawn(1) for details.

Type: list of strings

Default: [ ]

Example: [ "--drop-capability=CAP_SYS_CHROOT" ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths

Extra veth-pairs to be created for the container

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.forwardPorts

List of forwarded ports from host to container. Each forwarded port is specified by protocol, hostPort and containerPort. By default, protocol is tcp and hostPort and containerPort are assumed to be the same if containerPort is not explicitly given.

Type: list of submodules

Default: [ ]

Example: [ { containerPort = 80; hostPort = 8080; protocol = "tcp"; } ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.forwardPorts.*.containerPort

Target port of container

Type: null or signed integer

Default: null

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.forwardPorts.*.hostPort

Source port of the external interface on host

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.forwardPorts.*.protocol

The protocol specifier for port forwarding between host and container

Type: string

Default: "tcp"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.hostAddress

The IPv4 address assigned to the host interface. (Not used when hostBridge is set.)

Type: null or string

Default: null

Example: "10.231.136.1"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.hostAddress6

The IPv6 address assigned to the host interface. (Not used when hostBridge is set.)

Type: null or Concatenated string

Default: null

Example: "fc00::1"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.hostBridge

Put the host-side of the veth-pair into the named bridge. Only one of hostAddress* or hostBridge can be given.

Type: null or Concatenated string

Default: null

Example: "br0"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.localAddress

The IPv4 address assigned to the interface in the container. If a hostBridge is used, this should be given with netmask to access the whole network. Otherwise the default netmask is /32 and routing is set up from localAddress to hostAddress and back.

Type: null or string

Default: null

Example: "10.231.136.2"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.extraVeths.<name>.localAddress6

The IPv6 address assigned to the interface in the container. If a hostBridge is used, this should be given with netmask to access the whole network. Otherwise the default netmask is /128 and routing is set up from localAddress6 to hostAddress6 and back.

Type: null or Concatenated string

Default: null

Example: "fc00::2"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.forwardPorts

List of forwarded ports from host to container. Each forwarded port is specified by protocol, hostPort and containerPort. By default, protocol is tcp and hostPort and containerPort are assumed to be the same if containerPort is not explicitly given.

Type: list of submodules

Default: [ ]

Example: [ { containerPort = 80; hostPort = 8080; protocol = "tcp"; } ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.forwardPorts.*.containerPort

Target port of container

Type: null or signed integer

Default: null

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.forwardPorts.*.hostPort

Source port of the external interface on host

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.forwardPorts.*.protocol

The protocol specifier for port forwarding between host and container

Type: string

Default: "tcp"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.hostAddress

The IPv4 address assigned to the host interface. (Not used when hostBridge is set.)

Type: null or string

Default: null

Example: "10.231.136.1"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.hostAddress6

The IPv6 address assigned to the host interface. (Not used when hostBridge is set.)

Type: null or Concatenated string

Default: null

Example: "fc00::1"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.hostBridge

Put the host-side of the veth-pair into the named bridge. Only one of hostAddress* or hostBridge can be given.

Type: null or Concatenated string

Default: null

Example: "br0"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.interfaces

The list of interfaces to be moved into the container.

Type: list of Concatenated strings

Default: [ ]

Example: [ "eth1" "eth2" ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.localAddress

The IPv4 address assigned to the interface in the container. If a hostBridge is used, this should be given with netmask to access the whole network. Otherwise the default netmask is /32 and routing is set up from localAddress to hostAddress and back.

Type: null or string

Default: null

Example: "10.231.136.2"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.localAddress6

The IPv6 address assigned to the interface in the container. If a hostBridge is used, this should be given with netmask to access the whole network. Otherwise the default netmask is /128 and routing is set up from localAddress6 to hostAddress6 and back.

Type: null or Concatenated string

Default: null

Example: "fc00::2"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.macvlans

The list of host interfaces from which macvlans will be created. For each interface specified, a macvlan interface will be created and moved to the container.

Type: list of strings

Default: [ ]

Example: [ "eth1" "eth2" ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.path

As an alternative to specifying config, you can specify the path to the evaluated NixOS system configuration, typically a symlink to a system profile.

Type: path

Example: "/nix/var/nix/profiles/containers/webserver"

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.privateNetwork

Whether to give the container its own private virtual Ethernet interface. The interface is called eth0, and is hooked up to the interface ve-container-name on the host. If this option is not set, then the container shares the network interfaces of the host, and can bind to any port on any interface.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
containers.<name>.tmpfs

Mounts a set of tmpfs file systems into the container. Multiple paths can be specified. Valid items must conform to the --tmpfs argument of systemd-nspawn. See systemd-nspawn(1) for details.

Type: list of strings

Default: [ ]

Example: [ "/var" ]

Declared by:

<nixpkgs/nixos/modules/virtualisation/containers.nix>
documentation.enable

Whether to install documentation of packages from environment.systemPackages into the generated system path.

See "Multiple-output packages" chapter in the nixpkgs manual for more info.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/misc/documentation.nix>
documentation.dev.enable

Whether to install documentation targeted at developers.

  • This includes man pages targeted at developers if man.enable is set (this also includes "devman" outputs).

  • This includes info pages targeted at developers if info.enable is set (this also includes "devinfo" outputs).

  • This includes other pages targeted at developers if doc.enable is set (this also includes "devdoc" outputs).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/misc/documentation.nix>
documentation.doc.enable

Whether to install documentation distributed in packages' /share/doc. Usually plain text and/or HTML. This also includes "doc" outputs.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/misc/documentation.nix>
documentation.info.enable

Whether to install info pages and the info command. This also includes "info" outputs.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/misc/documentation.nix>
documentation.man.enable

Whether to install manual pages and the man command. This also includes "man" outputs.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/misc/documentation.nix>
dysnomia.enable

Whether to enable Dysnomia

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.enableAuthentication

Whether to publish privacy-sensitive authentication credentials

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.package

The Dysnomia package

Type: path

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.components

An atttribute set in which each key represents a container and each value an attribute set in which each key represents a component and each value a derivation constructing its initial state

Type: unspecified

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.containers

An attribute set in which each key represents a container and each value an attribute set providing its configuration properties

Type: unspecified

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.extraContainerPaths

A list of paths containing additional container configurations that are added to the search folders

Type: unspecified

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.extraContainerProperties

An attribute set providing additional container settings in addition to the default properties

Type: unspecified

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.extraModulePaths

A list of paths containing additional modules that are added to the search folders

Type: unspecified

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
dysnomia.properties

An attribute set in which each attribute represents a machine property. Optionally, these values can be shell substitutions.

Type: unspecified

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/misc/dysnomia.nix>
environment.enableDebugInfo

Some NixOS packages provide debug symbols. However, these are not included in the system closure by default to save disk space. Enabling this option causes the debug symbols to appear in /run/current-system/sw/lib/debug/.build-id, where tools such as gdb can find them. If you need debug symbols for a package that doesn't provide them by default, you can enable them as follows:

nixpkgs.config.packageOverrides = pkgs: {
  hello = pkgs.hello.overrideAttrs (oldAttrs: {
    separateDebugInfo = true;
  });
};

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/debug-info.nix>
environment.blcr.enable

Whether to enable support for the BLCR checkpointing tool.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/blcr.nix>
environment.checkConfigurationOptions

Alias of _module.check.

Type: unspecified

Declared by:

<nixpkgs/nixos/modules/rename.nix>
environment.etc

Set of files that have to be linked in /etc.

Type: list or attribute set of submodules

Default: { }

Example:

{ example-configuration-file =
    { source = "/nix/store/.../etc/dir/file.conf.example";
      mode = "0440";
    };
  "default/useradd".text = "GROUP=100 ...";
}

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.enable

Whether this /etc file should be generated. This option allows specific /etc files to be disabled.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.gid

GID of created file. Only takes affect when the file is copied (that is, the mode is not 'symlink').

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.group

Group name of created file. Only takes affect when the file is copied (that is, the mode is not 'symlink'). Changing this option takes precedence over gid.

Type: string

Default: "+0"

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.mode

If set to something else than symlink, the file is copied instead of symlinked, with the given file mode.

Type: string

Default: "symlink"

Example: "0600"

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.source

Path of the source file.

Type: path

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.target

Name of symlink (relative to /etc). Defaults to the attribute name.

Type: string

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.text

Text of the file.

Type: null or strings concatenated with "\n"

Default: null

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.uid

UID of created file. Only takes affect when the file is copied (that is, the mode is not 'symlink').

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.etc.<name?>.user

User name of created file. Only takes affect when the file is copied (that is, the mode is not 'symlink'). Changing this option takes precedence over uid.

Type: string

Default: "+0"

Declared by:

<nixpkgs/nixos/modules/system/etc/etc.nix>
environment.extraInit

Shell script code called during global environment initialisation after all variables and profileVariables have been set. This code is assumed to be shell-independent, which means you should stick to pure sh without sh word split.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.extraOutputsToInstall

List of additional package outputs to be symlinked into /run/current-system/sw.

Type: list of strings

Default: [ ]

Example: [ "doc" "info" "devdoc" ]

Declared by:

<nixpkgs/nixos/modules/config/system-path.nix>
environment.extraSetup

Shell fragments to be run after the system environment has been created. This should only be used for things that need to modify the internals of the environment, e.g. generating MIME caches. The environment being built can be accessed at $out.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/system-path.nix>
environment.freetds

Configure freetds database entries. Each attribute denotes a section within freetds.conf, and the value (a string) is the config content for that section. When at least one entry is configured the global environment variables FREETDSCONF, FREETDS and SYBASE will be configured to allow the programs that use freetds to find the library and config.

Type: attribute set of strings

Default: { }

Example:

{ MYDATABASE = ''
    host = 10.0.2.100
    port = 1433
    tds version = 7.2
  '';
}

Declared by:

<nixpkgs/nixos/modules/programs/freetds.nix>
environment.gnome3.excludePackages

Which packages gnome should exclude from the default environment

Type: list of packages

Default: [ ]

Example:

[ pkgs.gnome3.totem ]

Declared by:

<nixpkgs/nixos/modules/services/x11/desktop-managers/gnome3.nix>
environment.interactiveShellInit

Shell script code called during interactive shell initialisation. This code is assumed to be shell-independent, which means you should stick to pure sh without sh word split.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.loginShellInit

Shell script code called during login shell initialisation. This code is assumed to be shell-independent, which means you should stick to pure sh without sh word split.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.lxqt.excludePackages

Which LXQt packages to exclude from the default environment

Type: list of packages

Default: [ ]

Example:

[ pkgs.lxqt.qterminal ]

Declared by:

<nixpkgs/nixos/modules/services/x11/desktop-managers/lxqt.nix>
environment.mate.excludePackages

Which MATE packages to exclude from the default environment

Type: list of packages

Default: [ ]

Example:

[ pkgs.mate.mate-terminal pkgs.mate.pluma ]

Declared by:

<nixpkgs/nixos/modules/services/x11/desktop-managers/mate.nix>
environment.noXlibs

Switch off the options in the default configuration that require X11 libraries. This includes client-side font configuration and SSH forwarding of X11 authentication in. Thus, you probably do not want to enable this option if you want to run X11 programs on this machine via SSH.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/no-x-libs.nix>
environment.pathsToLink

List of directories to be symlinked in /run/current-system/sw.

Type: list of strings

Default: [ ]

Example: [ "/" ]

Declared by:

<nixpkgs/nixos/modules/config/system-path.nix>
environment.profileRelativeEnvVars

Attribute set of environment variable. Each attribute maps to a list of relative paths. Each relative path is appended to the each profile of environment.profiles to form the content of the corresponding environment variable.

Type: attribute set of list of stringss

Example: { MANPATH = [ "/man" "/share/man" ] ; PATH = [ "/bin" ] ; }

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.profiles

A list of profiles used to setup the global environment.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.sessionVariables

A set of environment variables used in the global environment. These variables will be set by PAM. The value of each variable can be either a string or a list of strings. The latter is concatenated, interspersed with colon characters.

Type: attribute set of string or list of stringss

Default: { }

Declared by:

<nixpkgs/nixos/modules/config/system-environment.nix>
environment.shellAliases

An attribute set that maps aliases (the top level attribute names in this option) to command strings or directly to build outputs. The aliases are added to all users' shells.

Type: attribute set

Default: { }

Example: { ll = "ls -l"; }

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.shellInit

Shell script code called during shell initialisation. This code is assumed to be shell-independent, which means you should stick to pure sh without sh word split.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.shells

A list of permissible login shells for user accounts. No need to mention /bin/sh here, it is placed into this list implicitly.

Type: list of package or paths

Default: [ ]

Example:

[ pkgs.bashInteractive pkgs.zsh ]

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
environment.systemPackages

The set of packages that appear in /run/current-system/sw. These packages are automatically available to all users, and are automatically updated every time you rebuild the system configuration. (The latter is the main difference with installing them in the default profile, /nix/var/nix/profiles/default.

Type: list of packages

Default: [ ]

Example:

[ pkgs.firefox pkgs.thunderbird ]

Declared by:

<nixpkgs/nixos/modules/config/system-path.nix>
environment.unixODBCDrivers

Specifies Unix ODBC drivers to be registered in /etc/odbcinst.ini. You may also want to add pkgs.unixODBC to the system path to get a command line client to connnect to ODBC databases.

Type: list of packages

Default: [ ]

Example:

with pkgs.unixODBCDrivers; [ sqlite psql ]

Declared by:

<nixpkgs/nixos/modules/config/unix-odbc-drivers.nix>
environment.variables

A set of environment variables used in the global environment. These variables will be set on shell initialisation (e.g. in /etc/profile). The value of each variable can be either a string or a list of strings. The latter is concatenated, interspersed with colon characters.

Type: attribute set of string or list of stringss

Default: { }

Example: { EDITOR = "nvim"; VISUAL = "nvim"; }

Declared by:

<nixpkgs/nixos/modules/config/shells-environment.nix>
fileSystems

The file systems to be mounted. It must include an entry for the root directory (mountPoint = "/"). Each entry in the list is an attribute set with the following fields: mountPoint, device, fsType (a file system type recognised by mount; defaults to "auto"), and options (the mount options passed to mount using the -o flag; defaults to [ "defaults" ]).

Instead of specifying device, you can also specify a volume label (label) for file systems that support it, such as ext2/ext3 (see mke2fs -L).

Type: list or attribute set of submodules

Default: { }

Example:

{
  "/".device = "/dev/hda1";
  "/data" = {
    device = "/dev/hda2";
    fsType = "ext3";
    options = [ "data=journal" ];
  };
  "/bigdisk".label = "bigdisk";
}

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
<nixpkgs/nixos/modules/tasks/encrypted-devices.nix>
<nixpkgs/nixos/modules/system/boot/stage-1.nix>
fileSystems.<name?>.autoFormat

If the device does not currently contain a filesystem (as determined by blkid, then automatically format it with the filesystem type specified in fsType. Use with caution.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.autoResize

If set, the filesystem is grown to its maximum size before being mounted. (This is typically the size of the containing partition.) This is currently only supported for ext2/3/4 filesystems that are mounted during early boot.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.device

Location of the device.

Type: null or string (with check: non-empty)

Default: null

Example: "/dev/sda"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.encrypted.enable

The block device is backed by an encrypted one, adds this device as a initrd luks entry.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/encrypted-devices.nix>
fileSystems.<name?>.encrypted.blkDev

Location of the backing encrypted device.

Type: null or string

Default: null

Example: "/dev/sda1"

Declared by:

<nixpkgs/nixos/modules/tasks/encrypted-devices.nix>
fileSystems.<name?>.encrypted.keyFile

File system location of keyfile. This unlocks the drive after the root has been mounted to /mnt-root.

Type: null or string

Default: null

Example: "/mnt-root/root/.swapkey"

Declared by:

<nixpkgs/nixos/modules/tasks/encrypted-devices.nix>
fileSystems.<name?>.encrypted.label

Label of the unlocked encrypted device. Set fileSystems.<name?>.device to /dev/mapper/<label> to mount the unlocked device.

Type: null or string

Default: null

Example: "rootfs"

Declared by:

<nixpkgs/nixos/modules/tasks/encrypted-devices.nix>
fileSystems.<name?>.formatOptions

If autoFormat option is set specifies extra options passed to mkfs.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.fsType

Type of the file system.

Type: string (with check: non-empty)

Default: "auto"

Example: "ext3"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.label

Label of the device (if any).

Type: null or string (with check: non-empty)

Default: null

Example: "root-partition"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.mountPoint

Location of the mounted the file system.

Type: string (with check: non-empty)

Example: "/mnt/usb"

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.neededForBoot

If set, this file system will be mounted in the initial ramdisk. By default, this applies to the root file system and to the file system containing /nix/store.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/system/boot/stage-1.nix>
fileSystems.<name?>.noCheck

Disable running fsck on this filesystem.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fileSystems.<name?>.options

Options used to mount the file system.

Type: list of string (with check: non-empty)s

Default: [ "defaults" ]

Example: [ "data=journal" ]

Declared by:

<nixpkgs/nixos/modules/tasks/filesystems.nix>
fonts.enableDefaultFonts

Enable a basic set of fonts providing several font styles and families and reasonable coverage of Unicode.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fonts.nix>
fonts.enableFontDir

Whether to create a directory with links to all fonts in /run/current-system/sw/share/X11-fonts.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontdir.nix>
fonts.enableGhostscriptFonts

Whether to add the fonts provided by Ghostscript (such as various URW fonts and the “Base-14” Postscript fonts) to the list of system fonts, making them available to X11 applications.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/ghostscript.nix>
fonts.fontconfig.enable

If enabled, a Fontconfig configuration file will be built pointing to a set of default fonts. If you don't care about running X11 applications or any other program that uses Fontconfig, you can turn this option off and prevent a dependency on all those fonts.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.allowBitmaps

Allow bitmap fonts. Set to false to ban all bitmap fonts.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.allowType1

Allow Type-1 fonts. Default is false because of poor rendering.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.antialias

Enable font antialiasing. At high resolution (> 200 DPI), antialiasing has no visible effect; users of such displays may want to disable this option.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.cache32Bit

Generate system fonts cache for 32-bit applications.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.defaultFonts.monospace

System-wide default monospace font(s). Multiple fonts may be listed in case multiple languages must be supported.

Type: list of strings

Default: [ "DejaVu Sans Mono" ]

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.defaultFonts.sansSerif

System-wide default sans serif font(s). Multiple fonts may be listed in case multiple languages must be supported.

Type: list of strings

Default: [ "DejaVu Sans" ]

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.defaultFonts.serif

System-wide default serif font(s). Multiple fonts may be listed in case multiple languages must be supported.

Type: list of strings

Default: [ "DejaVu Serif" ]

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.dpi

Force DPI setting. Setting to 0 disables DPI forcing; the DPI detected for the display will be used.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.hinting.enable

Enable font hinting. Hinting aligns glyphs to pixel boundaries to improve rendering sharpness at low resolution. At high resolution (> 200 dpi) hinting will do nothing (at best); users of such displays may want to disable this option.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.hinting.autohint

Enable the autohinter in place of the default interpreter. The results are usually lower quality than correctly-hinted fonts, but better than unhinted fonts.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.includeUserConf

Include the user configuration from ~/.config/fontconfig/fonts.conf or ~/.config/fontconfig/conf.d.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.localConf

System-wide customization file contents, has higher priority than defaultFonts settings.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.penultimate.enable

Enable fontconfig-penultimate settings to supplement the NixOS defaults by providing per-font rendering defaults and metric aliases.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig-penultimate.nix>
fonts.fontconfig.subpixel.lcdfilter

FreeType LCD filter. At high resolution (> 200 DPI), LCD filtering has no visible effect; users of such displays may want to select none.

Type: one of "none", "default", "light", "legacy"

Default: "default"

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.subpixel.rgba

Subpixel order. The overwhelming majority of displays are rgb in their normal orientation. Select vrgb for mounting such a display 90 degrees clockwise from its normal orientation or vbgr for mounting 90 degrees counter-clockwise. Select bgr in the unlikely event of mounting 180 degrees from the normal orientation. Reverse these directions in the improbable event that the display's native subpixel order is bgr.

Type: one of "rgb", "bgr", "vrgb", "vbgr", "none"

Default: "rgb"

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fontconfig.ultimate.enable

Enable fontconfig-ultimate settings (formerly known as Infinality). Besides the customizable settings in this NixOS module, fontconfig-ultimate also provides many font-specific rendering tweaks.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig-ultimate.nix>
fonts.fontconfig.ultimate.preset

FreeType rendering settings preset. Any of the presets may be customized by setting environment variables.

Type: one of "ultimate1", "ultimate2", "ultimate3", "ultimate4", "ultimate5", "osx", "windowsxp"

Default: "ultimate3"

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig-ultimate.nix>
fonts.fontconfig.ultimate.substitutions

Font substitutions to replace common Type 1 fonts with nicer TrueType fonts. free uses free fonts, ms uses Microsoft fonts, combi uses a combination, and none disables the substitutions.

Type: one of "free", "combi", "ms", "none"

Default: "free"

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig-ultimate.nix>
fonts.fontconfig.useEmbeddedBitmaps

Use embedded bitmaps in fonts like Calibri.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/fonts/fontconfig.nix>
fonts.fonts

List of primary font paths.

Type: list of paths

Default: [ ]

Example:

[ pkgs.dejavu_fonts ]

Declared by:

<nixpkgs/nixos/modules/config/fonts/fonts.nix>
gnu

When enabled, GNU software is chosen by default whenever a there is a choice between GNU and non-GNU software (e.g., GNU lsh vs. OpenSSH).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/gnu.nix>
hardware.enableAllFirmware

Turn on this option if you want to enable all the firmware.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/all-firmware.nix>
hardware.enableKSM

Whether to enable Kernel Same-Page Merging.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/hardware/ksm.nix>
hardware.enableRedistributableFirmware

Turn on this option if you want to enable all the firmware with a license allowing redistribution. (i.e. free firmware and firmware-linux-nonfree)

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/all-firmware.nix>
hardware.bluetooth.enable

Whether to enable support for Bluetooth..

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/hardware/bluetooth.nix>
hardware.bluetooth.package

Which BlueZ package to use.

Type: package

Default: "pkgs.bluez"

Example: "pkgs.bluez.override { enableMidi = true; }"

Declared by:

<nixpkgs/nixos/modules/services/hardware/bluetooth.nix>
hardware.bluetooth.extraConfig

Set additional configuration for system-wide bluetooth (/etc/bluetooth/main.conf).

NOTE: We already include [Policy], so any configuration under the Policy group should come first.

Type: strings concatenated with "\n"

Default: ""

Example:

''
[General]
ControllerMode = bredr
''

Declared by:

<nixpkgs/nixos/modules/services/hardware/bluetooth.nix>
hardware.bluetooth.powerOnBoot

Whether to power up the default Bluetooth controller on boot.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/hardware/bluetooth.nix>
hardware.brightnessctl.enable

Enable brightnessctl in userspace. This will allow brightness control from users in the video group.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/brightnessctl.nix>
hardware.bumblebee.enable

Enable the bumblebee daemon to manage Optimus hybrid video cards. This should power off secondary GPU until its use is requested by running an application with optirun.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/video/bumblebee.nix>
hardware.bumblebee.connectDisplay

Set to true if you intend to connect your discrete card to a monitor. This option will set up your Nvidia card for EDID discovery and to turn on the monitor signal.

Only nvidia driver is supported so far.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/video/bumblebee.nix>
hardware.bumblebee.driver

Set driver used by bumblebeed. Supported are nouveau and nvidia.

Type: one of "nvidia", "nouveau"

Default: "nvidia"

Declared by:

<nixpkgs/nixos/modules/hardware/video/bumblebee.nix>
hardware.bumblebee.group

Group for bumblebee socket

Type: string

Default: "wheel"

Example: "video"

Declared by:

<nixpkgs/nixos/modules/hardware/video/bumblebee.nix>
hardware.bumblebee.pmMethod

Set preferred power management method for unused card.

Type: one of "auto", "bbswitch", "switcheroo", "none"

Default: "auto"

Declared by:

<nixpkgs/nixos/modules/hardware/video/bumblebee.nix>
hardware.ckb.enable

Whether to enable the Corsair keyboard/mouse driver.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/hardware/ckb.nix>
hardware.ckb.package

The package implementing the Corsair keyboard/mouse driver.

Type: package

Default: "pkgs.ckb"

Declared by:

<nixpkgs/nixos/modules/hardware/ckb.nix>
hardware.cpu.amd.updateMicrocode

Update the CPU microcode for AMD processors.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/cpu/amd-microcode.nix>
hardware.cpu.intel.updateMicrocode

Update the CPU microcode for Intel processors.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/cpu/intel-microcode.nix>
hardware.digitalbitbox.enable

Enables udev rules for Digital Bitbox devices.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/digitalbitbox.nix>
hardware.digitalbitbox.package

The Digital Bitbox package to use. This can be used to install a package with udev rules that differ from the defaults.

Type: package

Default: "pkgs.digitalbitbox"

Declared by:

<nixpkgs/nixos/modules/hardware/digitalbitbox.nix>
hardware.facetimehd.enable

Whether to enable facetimehd kernel module.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/hardware/video/webcam/facetimehd.nix>
hardware.firmware

List of packages containing firmware files. Such files will be loaded automatically if the kernel asks for them (i.e., when it has detected specific hardware that requires firmware to function). If multiple packages contain firmware files with the same name, the first package in the list takes precedence. Note that you must rebuild your system if you add files to any of these directories.

Type: list of packages

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/hardware/udev.nix>
hardware.mcelog.enable

Enable the Machine Check Exception logger.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/mcelog.nix>
hardware.mwProCapture.enable

Whether to enable Magewell Pro Capture family kernel module.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/hardware/video/capture/mwprocapture.nix>
hardware.nitrokey.enable

Enables udev rules for Nitrokey devices. By default grants access to users in the "nitrokey" group. You may want to install the nitrokey-app package, depending on your device and needs.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/nitrokey.nix>
hardware.nitrokey.group

Grant access to Nitrokey devices to users in this group.

Type: string

Default: "nitrokey"

Example: "wheel"

Declared by:

<nixpkgs/nixos/modules/hardware/nitrokey.nix>
hardware.nvidia.modesetting.enable

Enable kernel modesetting when using the NVIDIA proprietary driver.

Enabling this fixes screen tearing when using Optimus via PRIME (see hardware.nvidia.optimus_prime.enable. This is not enabled by default because it is not officially supported by NVIDIA and would not work with SLI.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/video/nvidia.nix>
hardware.nvidia.optimus_prime.enable

Enable NVIDIA Optimus support using the NVIDIA proprietary driver via PRIME. If enabled, the NVIDIA GPU will be always on and used for all rendering, while enabling output to displays attached only to the integrated Intel GPU without a multiplexer.

Note that this option only has any effect if the "nvidia" driver is specified in services.xserver.videoDrivers, and it should preferably be the only driver there.

If this is enabled, then the bus IDs of the NVIDIA and Intel GPUs have to be specified (hardware.nvidia.optimus_prime.nvidiaBusId and hardware.nvidia.optimus_prime.intelBusId).

If you enable this, you may want to also enable kernel modesetting for the NVIDIA driver (hardware.nvidia.modesetting.enable) in order to prevent tearing.

Note that this configuration will only be successful when a display manager for which the services.xserver.displayManager.setupCommands option is supported is used; notably, SLiM is not supported.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/video/nvidia.nix>
hardware.nvidia.optimus_prime.intelBusId

Bus ID of the Intel GPU. You can find it using lspci; for example if lspci shows the Intel GPU at "00:02.0", set this option to "PCI:0:2:0".

Type: Concatenated string

Default: ""

Example: "PCI:0:2:0"

Declared by:

<nixpkgs/nixos/modules/hardware/video/nvidia.nix>
hardware.nvidia.optimus_prime.nvidiaBusId

Bus ID of the NVIDIA GPU. You can find it using lspci; for example if lspci shows the NVIDIA GPU at "01:00.0", set this option to "PCI:1:0:0".

Type: Concatenated string

Default: ""

Example: "PCI:1:0:0"

Declared by:

<nixpkgs/nixos/modules/hardware/video/nvidia.nix>
hardware.nvidiaOptimus.disable

Completely disable the NVIDIA graphics card and use the integrated graphics processor instead.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/hardware/nvidia-optimus.nix>
hardware.onlykey.enable

Enable OnlyKey device (https://crp.to/p/) support.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/onlykey.nix>
hardware.opengl.enable

Whether to enable OpenGL drivers. This is needed to enable OpenGL support in X11 systems, as well as for Wayland compositors like sway, way-cooler and Weston. It is enabled by default by the corresponding modules, so you do not usually have to set it yourself, only if there is no module for your wayland compositor of choice. See services.xserver.enable, programs.sway.enable, and programs.way-cooler.enable.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.opengl.driSupport

Whether to enable accelerated OpenGL rendering through the Direct Rendering Interface (DRI).

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.opengl.driSupport32Bit

On 64-bit systems, whether to support Direct Rendering for 32-bit applications (such as Wine). This is currently only supported for the nvidia and ati_unfree drivers, as well as Mesa.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.opengl.extraPackages

Additional packages to add to OpenGL drivers. This can be used to add OpenCL drivers, VA-API/VDPAU drivers etc.

Type: list of packages

Default: [ ]

Example:

with pkgs; [ vaapiIntel libvdpau-va-gl vaapiVdpau intel-ocl ]

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.opengl.extraPackages32

Additional packages to add to 32-bit OpenGL drivers on 64-bit systems. Used when driSupport32Bit is set. This can be used to add OpenCL drivers, VA-API/VDPAU drivers etc.

Type: list of packages

Default: [ ]

Example:

with pkgs.pkgsi686Linux; [ vaapiIntel libvdpau-va-gl vaapiVdpau ]

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.opengl.s3tcSupport

Make S3TC(S3 Texture Compression) via libtxc_dxtn available to OpenGL drivers instead of the patent-free S2TC replacement.

Using this library may require a patent license depending on your location.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/opengl.nix>
hardware.parallels.enable

This enables Parallels Tools for Linux guests, along with provided video, mouse and other hardware drivers.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/virtualisation/parallels-guest.nix>
hardware.parallels.package

Defines which package to use for prl-tools. Override to change the version.

Type: package

Default: "config.boot.kernelPackages.prl-tools"

Example:

config.boot.kernelPackages.prl-tools

Declared by:

<nixpkgs/nixos/modules/virtualisation/parallels-guest.nix>
hardware.parallels.autoMountShares

Control prlfsmountd service. When this service is running, shares can not be manually mounted through `mount -t prl_fs ...` as this service will remount and trample any set options. Recommended to enable for simple file sharing, but extended share use such as for code should disable this to manually mount shares.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/virtualisation/parallels-guest.nix>
hardware.pcmcia.enable

Enable this option to support PCMCIA card.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/pcmcia.nix>
hardware.pcmcia.config

Path to the configuration file which maps the memory, IRQs and ports used by the PCMCIA hardware.

Type: unspecified

Default: null

Declared by:

<nixpkgs/nixos/modules/hardware/pcmcia.nix>
hardware.pcmcia.firmware

List of firmware used to handle specific PCMCIA card.

Type: list of paths

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/hardware/pcmcia.nix>
hardware.pulseaudio.enable

Whether to enable the PulseAudio sound server.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.package

The PulseAudio derivation to use. This can be used to enable features (such as JACK support, Bluetooth) via the pulseaudioFull package.

Type: package

Default: "pkgs.pulseaudio"

Example:

pkgs.pulseaudioFull

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.configFile

The path to the default configuration options the PulseAudio server should use. By default, the "default.pa" configuration from the PulseAudio distribution is used.

Type: null or path

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.daemon.config

Config of the pulse daemon. See man pulse-daemon.conf.

Type: attribute set of unspecifieds

Default: { }

Example:

{ flat-volumes = "no"; }

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.daemon.logLevel

The log level that the system-wide pulseaudio daemon should use, if activated.

Type: string

Default: "notice"

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.extraClientConf

Extra configuration appended to pulse/client.conf file.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.extraConfig

Literal string to append to configFile and the config file generated by the pulseaudio module.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.support32Bit

Whether to include the 32-bit pulseaudio libraries in the system or not. This is only useful on 64-bit systems and currently limited to x86_64-linux.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.systemWide

If false, a PulseAudio server is launched automatically for each user that tries to use the sound system. The server runs with user privileges. This is the recommended and most secure way to use PulseAudio. If true, one system-wide PulseAudio server is launched on boot, running as the user "pulse", and only users in the "audio" group will have access to the server. Please read the PulseAudio documentation for more details.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.tcp.enable

Whether to enable tcp streaming support.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.tcp.anonymousClients.allowAll

Whether to enable all anonymous clients to stream to the server.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.tcp.anonymousClients.allowedIpRanges

A list of IP subnets that are allowed to stream to the server.

Type: list of strings

Default: [ ]

Example:

[ "127.0.0.1" "192.168.1.0/24" ]

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.zeroconf.discovery.enable

Whether to enable discovery of pulseaudio sinks in the local network.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.pulseaudio.zeroconf.publish.enable

Whether to enable publishing the pulseaudio sink in the local network.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/pulseaudio.nix>
hardware.raid.HPSmartArray.enable

Whether to enable HP Smart Array kernel modules and CLI utility.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/hardware/raid/hpsa.nix>
hardware.sane.enable

Enable support for SANE scanners.

Note: Users in the "scanner" group will gain access to the scanner, or the "lp" group if it's also a printer.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane.nix>
hardware.sane.brscan4.enable

When enabled, will automatically register the "brscan4" sane backend and bring configuration files to their expected location.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.brscan4.netDevices

The list of network devices that will be registered against the brscan4 sane backend.

Type: list or attribute set of submodules

Default: { }

Example: { office1 = { ip = "192.168.1.2"; model = "MFC-7860DW"; } ; office2 = { model = "MFC-7860DW"; nodename = "BRW0080927AFBCE"; } ; }

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.brscan4.netDevices.<name?>.ip

The ip address of the device. If undefined, you will have to provide a nodename.

Type: null or string

Default: null

Example:

192.168.1.2

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.brscan4.netDevices.<name?>.model

The model of the network device.

Type: string

Example:

MFC-7860DW

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.brscan4.netDevices.<name?>.name

The friendly name you give to the network device. If undefined, the name of attribute will be used.

Type: string

Example:

office1

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.brscan4.netDevices.<name?>.nodename

The node name of the device. If undefined, you will have to provide an ip.

Type: null or string

Default: null

Example:

BRW0080927AFBCE

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane_extra_backends/brscan4.nix>
hardware.sane.extraBackends

Packages providing extra SANE backends to enable.

Note: The example contains the package for HP scanners.

Type: list of paths

Default: [ ]

Example:

[ pkgs.hplipWithPlugin ]

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane.nix>
hardware.sane.netConf

Network hosts that should be probed for remote scanners.

Type: strings concatenated with "\n"

Default: ""

Example: "192.168.0.16"

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane.nix>
hardware.sane.snapshot

Use a development snapshot of SANE scanner drivers.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/hardware/sane.nix>
hardware.sensor.iio.enable

Enable this option to support IIO sensors.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/sensor/iio.nix>
hardware.trackpoint.enable

Enable sensitivity and speed configuration for trackpoints.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.trackpoint.device

The device name of the trackpoint. You can check with xinput. Some newer devices (example x1c6) use "TPPS/2 Elan TrackPoint".

Type: string

Default: "TPPS/2 IBM TrackPoint"

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.trackpoint.emulateWheel

Enable scrolling while holding the middle mouse button.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.trackpoint.fakeButtons

Switch to "bare" PS/2 mouse support in case Trackpoint buttons are not recognized properly. This can happen for example on models like the L430, T450, T450s, on which the Trackpoint buttons are actually a part of the Synaptics touchpad.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.trackpoint.sensitivity

Configure the trackpoint sensitivity. By default, the kernel configures 128.

Type: signed integer

Default: 128

Example: 255

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.trackpoint.speed

Configure the trackpoint speed. By default, the kernel configures 97.

Type: signed integer

Default: 97

Example: 255

Declared by:

<nixpkgs/nixos/modules/tasks/trackpoint.nix>
hardware.u2f.enable

Enable U2F hardware support.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/hardware/u2f.nix>
hardware.usbWwan.enable

Enable this option to support USB WWAN adapters.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/usb-wwan.nix>
i18n.consoleColors

The 16 colors palette used by the virtual consoles. Leave empty to use the default colors. Colors must be in hexadecimal format and listed in order from color 0 to color 15.

Type: list of strings

Default: [ ]

Example: [ "002b36" "dc322f" "859900" "b58900" "268bd2" "d33682" "2aa198" "eee8d5" "002b36" "cb4b16" "586e75" "657b83" "839496" "6c71c4" "93a1a1" "fdf6e3" ]

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.consoleFont

The font used for the virtual consoles. Leave empty to use whatever the setfont program considers the default font.

Type: string

Default: "Lat2-Terminus16"

Example: "LatArCyrHeb-16"

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.consoleKeyMap

The keyboard mapping table for the virtual consoles.

Type: string or path

Default: "us"

Example: "fr"

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.consolePackages

List of additional packages that provide console fonts, keymaps and other resources.

Type: list of packages

Default: "with pkgs.kbdKeymaps; [ dvp neo ]"

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.consoleUseXkbConfig

If set, configure the console keymap from the xserver keyboard settings.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.defaultLocale

The default locale. It determines the language for program messages, the format for dates and times, sort order, and so on. It also determines the character set, such as UTF-8.

Type: string

Default: "en_US.UTF-8"

Example: "nl_NL.UTF-8"

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.glibcLocales

Customized pkg.glibcLocales package.

Changing this option can disable handling of i18n.defaultLocale and supportedLocale.

Type: path

Default: (build of glibc-locales-2.27)

Example:

pkgs.glibcLocales

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
i18n.inputMethod.enabled

Select the enabled input method. Input methods is a software to input symbols that are not available on standard input devices.

Input methods are specially used to input Chinese, Japanese and Korean characters.

Currently the following input methods are available in NixOS:

  • ibus: The intelligent input bus, extra input engines can be added using i18n.inputMethod.ibus.engines.

  • fcitx: A customizable lightweight input method, extra input engines can be added using i18n.inputMethod.fcitx.engines.

  • nabi: A Korean input method based on XIM. Nabi doesn't support Qt 5.

  • uim: The universal input method, is a library with a XIM bridge. uim mainly support Chinese, Japanese and Korean.

Type: null or one of "ibus", "fcitx", "nabi", "uim"

Default: null

Example: "fcitx"

Declared by:

<nixpkgs/nixos/modules/i18n/input-method/default.nix>
i18n.inputMethod.fcitx.engines

Enabled Fcitx engines. Available engines are: anthy, chewing, cloudpinyin, hangul, libpinyin, m17n, mozc, rime, skk, table-extra, table-other, unikey.

Type: list of packages

Default: [ ]

Example:

with pkgs.fcitx-engines; [ mozc hangul ]

Declared by:

<nixpkgs/nixos/modules/i18n/input-method/fcitx.nix>
i18n.inputMethod.ibus.engines

Enabled IBus engines. Available engines are: anthy, hangul, kkc, libpinyin, m17n, mozc, table, table-others, uniemoji.

Type: list of packages

Default: [ ]

Example:

with pkgs.ibus-engines; [ mozc hangul ]

Declared by:

<nixpkgs/nixos/modules/i18n/input-method/ibus.nix>
i18n.inputMethod.ibus.panel

Replace the IBus panel with another panel.

Type: null or path

Default: null

Example:

''${pkgs.plasma5.plasma-desktop}/lib/libexec/kimpanel-ibus-panel

Declared by:

<nixpkgs/nixos/modules/i18n/input-method/ibus.nix>
i18n.inputMethod.uim.toolbar

selected UIM toolbar.

Type: one of "gtk", "gtk3", "gtk-systray", "gtk3-systray", "qt4"

Default: "gtk"

Example: "gtk-systray"

Declared by:

<nixpkgs/nixos/modules/i18n/input-method/uim.nix>
i18n.supportedLocales

List of locales that the system should support. The value "all" means that all locales supported by Glibc will be installed. A full list of supported locales can be found at https://sourceware.org/git/?p=glibc.git;a=blob;f=localedata/SUPPORTED.

Type: list of strings

Default: [ "all" ]

Example: [ "en_US.UTF-8/UTF-8" "nl_NL.UTF-8/UTF-8" "nl_NL/ISO-8859-1" ]

Declared by:

<nixpkgs/nixos/modules/config/i18n.nix>
krb5.enable

Whether to enable Whether to enable Kerberos V..

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.appdefaults

Settings used by some Kerberos V5 applications.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  pam = {
    debug = false;
    ticket_lifetime = 36000;
    renew_lifetime = 36000;
    max_timeout = 30;
    timeout_shift = 2;
    initial_timeout = 1;
  };
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.capaths

Authentication paths for non-hierarchical cross-realm authentication.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  "ATHENA.MIT.EDU" = {
    "EXAMPLE.COM" = ".";
  };
  "EXAMPLE.COM" = {
    "ATHENA.MIT.EDU" = ".";
  };
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.config

Verbatim krb5.conf configuration. Note that this is mutually exclusive with configuration via libdefaults, realms, domain_realm, capaths, appdefaults, plugins and extraConfig configuration options. Consult man krb5.conf for documentation.

Type: null or strings concatenated with "\n"

Default: null

Example:

''
[libdefaults]
  default_realm = EXAMPLE.COM

[realms]
  EXAMPLE.COM = {
    admin_server = kerberos.example.com
    kdc = kerberos.example.com
    default_principal_flags = +preauth
  }

[domain_realm]
  example.com  = EXAMPLE.COM
  .example.com = EXAMPLE.COM

[logging]
  kdc          = SYSLOG:NOTICE
  admin_server = SYSLOG:NOTICE
  default      = SYSLOG:NOTICE
''

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.defaultRealm

DEPRECATED, please use krb5.libdefaults.default_realm.

Type: null or string

Default: null

Example: "ATHENA.MIT.EDU"

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.domainRealm

DEPRECATED, please create a map of server hostnames to Kerberos realms in krb5.domain_realm.

Type: null or string

Default: null

Example: "athena.mit.edu"

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.domain_realm

Map of server hostnames to Kerberos realms.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  "example.com" = "EXAMPLE.COM";
  ".example.com" = "EXAMPLE.COM";
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.extraConfig

These lines go to the end of krb5.conf verbatim. krb5.conf may include any of the relations that are valid for kdc.conf (see man kdc.conf), but it is not a recommended practice.

Type: null or strings concatenated with "\n"

Default: null

Example:

''
[logging]
  kdc          = SYSLOG:NOTICE
  admin_server = SYSLOG:NOTICE
  default      = SYSLOG:NOTICE
''

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.kdc

DEPRECATED, please pass a kdc attribute to a realm in krb5.realms.

Type: null or string

Default: null

Example: "kerberos.mit.edu"

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.kerberos

The Kerberos implementation that will be present in environment.systemPackages after enabling this service.

Type: package

Default: "pkgs.krb5Full"

Example:

pkgs.heimdalFull

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.kerberosAdminServer

DEPRECATED, please pass an admin_server attribute to a realm in krb5.realms.

Type: null or string

Default: null

Example: "kerberos.mit.edu"

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.libdefaults

Settings used by the Kerberos V5 library.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  default_realm = "ATHENA.MIT.EDU";
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.plugins

Controls plugin module registration.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  ccselect = {
    disable = "k5identity";
  };
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
krb5.realms

Realm-specific contact information and settings.

Type: attribute set or strings concatenated with "\n"

Default: { }

Example:

{
  "ATHENA.MIT.EDU" = {
    admin_server = "athena.mit.edu";
    kdc = "athena.mit.edu";
  };
};

Declared by:

<nixpkgs/nixos/modules/config/krb5/default.nix>
lib

This option allows modules to define helper functions, constants, etc.

Type: attribute set of attribute sets

Default: { }

Declared by:

<nixpkgs/nixos/modules/misc/lib.nix>
nesting.children

Additional configurations to build.

Type: unspecified

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/activation/top-level.nix>
nesting.clone

Additional configurations to build based on the current configuration which then has a lower priority.

To switch to a cloned configuration (e.g. child-1) at runtime, run

# sudo /run/current-system/fine-tune/child-1/bin/switch-to-configuration test

Type: unspecified

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/system/activation/top-level.nix>
networking.enableB43Firmware

Turn on this option if you want firmware for the NICs supported by the b43 module.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/hardware/network/b43.nix>
networking.enableIPv6

Whether to enable support for IPv6.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds

This option allows you to define bond devices that aggregate multiple, underlying networking interfaces together. The value of this option is an attribute set. Each attribute specifies a bond, with the attribute name specifying the name of the bond's network interface

Type: attribute set of submodules

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.driverOptions

Options for the bonding driver. Documentation can be found in https://www.kernel.org/doc/Documentation/networking/bonding.txt

Type: attribute set of strings

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.interfaces

The interfaces to bond together

Type: list of strings

Example: [ "enp4s0f0" "enp4s0f1" "wlan0" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.lacp_rate

DEPRECATED, use `driverOptions`. Option specifying the rate in which we'll ask our link partner to transmit LACPDU packets in 802.3ad mode.

Type: null or string

Default: null

Example: "fast"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.miimon

DEPRECATED, use `driverOptions`. Miimon is the number of millisecond in between each round of polling by the device driver for failed links. By default polling is not enabled and the driver is trusted to properly detect and handle failure scenarios.

Type: null or signed integer

Default: null

Example: 100

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.mode

DEPRECATED, use `driverOptions`. The mode which the bond will be running. The default mode for the bonding driver is balance-rr, optimizing for throughput. More information about valid modes can be found at https://www.kernel.org/doc/Documentation/networking/bonding.txt

Type: null or string

Default: null

Example: "active-backup"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bonds.<name>.xmit_hash_policy

DEPRECATED, use `driverOptions`. Selects the transmit hash policy to use for slave selection in balance-xor, 802.3ad, and tlb modes.

Type: null or string

Default: null

Example: "layer2+3"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bridges

This option allows you to define Ethernet bridge devices that connect physical networks together. The value of this option is an attribute set. Each attribute specifies a bridge, with the attribute name specifying the name of the bridge's network interface.

Type: attribute set of submodules

Default: { }

Example: { br0 = { interfaces = [ "eth0" "eth1" ] ; } ; br1 = { interfaces = [ "eth2" "wlan0" ] ; } ; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bridges.<name>.interfaces

The physical network interfaces connected by the bridge.

Type: list of strings

Example: [ "eth0" "eth1" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.bridges.<name>.rstp

Whether the bridge interface should enable rstp.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.connman.enable

Whether to use ConnMan for managing your network connections.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/connman.nix>
networking.connman.enableVPN

Whether to enable ConnMan VPN service.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/connman.nix>
networking.connman.extraConfig

Configuration lines appended to the generated connman configuration file.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/networking/connman.nix>
networking.connman.extraFlags

Extra flags to pass to connmand

Type: list of Concatenated strings

Default: [ ]

Example: [ "--nodnsproxy" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/connman.nix>
networking.connman.networkInterfaceBlacklist

Default blacklisted interfaces, this includes NixOS containers interfaces (ve).

Type: list of Concatenated strings

Default: [ "vmnet" "vboxnet" "virbr" "ifb" "ve" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/connman.nix>
networking.defaultGateway

The default gateway. It can be left empty if it is auto-detected through DHCP. It can be specified as a string or an option set along with a network interface.

Type: null or submodule or string convertible to it

Default: null

Example: { address = "131.211.84.1"; interface = "enp3s0"; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway.address

The default gateway address.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway.interface

The default gateway interface.

Type: null or string

Default: null

Example: "enp0s3"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway.metric

The default gateway metric/preference.

Type: null or signed integer

Default: null

Example: 42

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway6

The default ipv6 gateway. It can be left empty if it is auto-detected through DHCP. It can be specified as a string or an option set along with a network interface.

Type: null or submodule or string convertible to it

Default: null

Example: { address = "2001:4d0:1e04:895::1"; interface = "enp3s0"; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway6.address

The default gateway address.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway6.interface

The default gateway interface.

Type: null or string

Default: null

Example: "enp0s3"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGateway6.metric

The default gateway metric/preference.

Type: null or signed integer

Default: null

Example: 42

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultGatewayWindowSize

The window size of the default gateway. It limits maximal data bursts that TCP peers are allowed to send to us.

Type: null or signed integer

Default: null

Example: 524288

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.defaultMailServer.authPass

Password used for SMTP auth. (STORED PLAIN TEXT, WORLD-READABLE IN NIX STORE)

It's recommended to use authPassFile which takes precedence over authPass.

Type: string

Default: ""

Example: "correctHorseBatteryStaple"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.authPassFile

Path to a file that contains the password used for SMTP auth. The file should not contain a trailing newline, if the password does not contain one. This file should be readable by the users that need to execute ssmtp.

authPassFile takes precedence over authPass.

Warning: when authPass is non-empty authPassFile defaults to a file in the WORLD-READABLE Nix store containing that password.

Type: null or string

Default: null

Example: "/run/keys/ssmtp-authpass"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.authUser

Username used for SMTP auth. Leave blank to disable.

Type: string

Default: ""

Example: "foo@example.org"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.directDelivery

Use the trivial Mail Transfer Agent (MTA) ssmtp package to allow programs to send e-mail. If you don't want to run a “real” MTA like sendmail or postfix on your machine, set this option to true, and set the option networking.defaultMailServer.hostName to the host name of your preferred mail server.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.domain

The domain from which mail will appear to be sent.

Type: string

Default: ""

Example: "example.org"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.hostName

The host name of the default mail server to use to deliver e-mail. Can also contain a port number (ex: mail.example.org:587), defaults to port 25 if no port is given.

Type: string

Example: "mail.example.org"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.root

The e-mail to which mail for users with UID < 1000 is forwarded.

Type: string

Default: ""

Example: "root@example.org"

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.setSendmail

Whether to set the system sendmail to ssmtp's.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.useSTARTTLS

Whether the STARTTLS should be used to connect to the default mail server. (This is needed for TLS-capable mail servers running on the default SMTP port 25.)

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.defaultMailServer.useTLS

Whether TLS should be used to connect to the default mail server.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/ssmtp.nix>
networking.dhcpcd.enable

Whether to enable dhcpcd for device configuration. This is mainly to explicitly disable dhcpcd (for example when using networkd).

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dhcpcd.allowInterfaces

Enable the DHCP client for any interface whose name matches any of the shell glob patterns in this list. Any interface not explicitly matched by this pattern will be denied. This pattern only applies when non-null.

Type: null or list of strings

Default: null

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dhcpcd.denyInterfaces

Disable the DHCP client for any interface whose name matches any of the shell glob patterns in this list. The purpose of this option is to blacklist virtual interfaces such as those created by Xen, libvirt, LXC, etc.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dhcpcd.extraConfig

Literal string to append to the config file generated for dhcpcd.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dhcpcd.persistent

Whenever to leave interfaces configured on dhcpcd daemon shutdown. Set to true if you have your root or store mounted over the network or this machine accepts SSH connections through DHCP interfaces and clients should be notified when it shuts down.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dhcpcd.runHook

Shell code that will be run after all other hooks. See `man dhcpcd-run-hooks` for details on what is possible.

Type: strings concatenated with "\n"

Default: ""

Example: "if [[ \$reason =~ BOUND ]]; then echo \$interface: Routers are \$new_routers - were \$old_routers; fi"

Declared by:

<nixpkgs/nixos/modules/services/networking/dhcpcd.nix>
networking.dnsExtensionMechanism

Enable the edns0 option in resolv.conf. With that option set, glibc supports use of the extension mechanisms for DNS (EDNS) specified in RFC 2671. The most popular user of that feature is DNSSEC, which does not work without it.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.dnsSingleRequest

Recent versions of glibc will issue both ipv4 (A) and ipv6 (AAAA) address queries at the same time, from the same port. Sometimes upstream routers will systemically drop the ipv4 queries. The symptom of this problem is that 'getent hosts example.com' only returns ipv6 (or perhaps only ipv4) addresses. The workaround for this is to specify the option 'single-request' in /etc/resolv.conf. This option enables that.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.domain

The domain. It can be left empty if it is auto-detected through DHCP.

Type: null or string

Default: null

Example: "home"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.extraHosts

Additional verbatim entries to be appended to /etc/hosts.

Type: strings concatenated with "\n"

Default: ""

Example: "192.168.0.1 lanlocalhost"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.extraResolvconfConf

Extra configuration to append to resolvconf.conf.

Type: strings concatenated with "\n"

Default: ""

Example: "libc=NO"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.firewall.enable

Whether to enable the firewall. This is a simple stateful firewall that blocks connection attempts to unauthorised TCP or UDP ports on this machine. It does not affect packet forwarding.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.allowPing

Whether to respond to incoming ICMPv4 echo requests ("pings"). ICMPv6 pings are always allowed because the larger address space of IPv6 makes network scanning much less effective.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.allowedTCPPortRanges

A range of TCP ports on which incoming connections are accepted.

Type: list of attribute set of signed integerss

Default: [ ]

Example: [ { from = 8999; to = 9003; } ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.allowedTCPPorts

List of TCP ports on which incoming connections are accepted.

Type: list of signed integers

Default: [ ]

Example: [ 22 80 ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.allowedUDPPortRanges

Range of open UDP ports.

Type: list of attribute set of signed integerss

Default: [ ]

Example: [ { from = 60000; to = 61000; } ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.allowedUDPPorts

List of open UDP ports.

Type: list of signed integers

Default: [ ]

Example: [ 53 ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.autoLoadConntrackHelpers

Whether to auto-load connection-tracking helpers. See the description at networking.firewall.connectionTrackingModules

(needs kernel 3.5+)

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.checkReversePath

Performs a reverse path filter test on a packet. If a reply to the packet would not be sent via the same interface that the packet arrived on, it is refused.

If using asymmetric routing or other complicated routing, set this option to loose mode or disable it and setup your own counter-measures.

This option can be either true (or "strict"), "loose" (only drop the packet if the source address is not reachable via any interface) or false. Defaults to the value of kernelHasRPFilter.

(needs kernel 3.3+)

Type: boolean or one of "strict", "loose"

Default: true

Example: "loose"

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.connectionTrackingModules

List of connection-tracking helpers that are auto-loaded. The complete list of possible values is given in the example.

As helpers can pose as a security risk, it is advised to set this to an empty list and disable the setting networking.firewall.autoLoadConntrackHelpers unless you know what you are doing. Connection tracking is disabled by default.

Loading of helpers is recommended to be done through the CT target. More info: https://home.regit.org/netfilter-en/secure-use-of-helpers/

Type: list of strings

Default: [ ]

Example: [ "ftp" "irc" "sane" "sip" "tftp" "amanda" "h323" "netbios_sn" "pptp" "snmp" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.extraCommands

Additional shell commands executed as part of the firewall initialisation script. These are executed just before the final "reject" firewall rule is added, so they can be used to allow packets that would otherwise be refused.

Type: strings concatenated with "\n"

Default: ""

Example: "iptables -A INPUT -p icmp -j ACCEPT"

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.extraPackages

Additional packages to be included in the environment of the system as well as the path of networking.firewall.extraCommands.

Type: list of packages

Default: [ ]

Example:

[ pkgs.ipset ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.extraStopCommands

Additional shell commands executed as part of the firewall shutdown script. These are executed just after the removal of the NixOS input rule, or if the service enters a failed state.

Type: strings concatenated with "\n"

Default: ""

Example: "iptables -P INPUT ACCEPT"

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.interfaces

Interface-specific open ports. Setting this value will override all values of the networking.firewall.allowed* options.

Type: attribute set of submodules

Default: { default = { allowedTCPPortRanges = [ ] ; allowedTCPPorts = [ ] ; allowedUDPPortRanges = [ ] ; allowedUDPPorts = [ ] ; } ; }

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.interfaces.<name>.allowedTCPPortRanges

A range of TCP ports on which incoming connections are accepted.

Type: list of attribute set of signed integerss

Default: [ ]

Example: [ { from = 8999; to = 9003; } ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.interfaces.<name>.allowedTCPPorts

List of TCP ports on which incoming connections are accepted.

Type: list of signed integers

Default: [ ]

Example: [ 22 80 ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.interfaces.<name>.allowedUDPPortRanges

Range of open UDP ports.

Type: list of attribute set of signed integerss

Default: [ ]

Example: [ { from = 60000; to = 61000; } ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.interfaces.<name>.allowedUDPPorts

List of open UDP ports.

Type: list of signed integers

Default: [ ]

Example: [ 53 ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.logRefusedConnections

Whether to log rejected or dropped incoming connections.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.logRefusedPackets

Whether to log all rejected or dropped incoming packets. This tends to give a lot of log messages, so it's mostly useful for debugging.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.logRefusedUnicastsOnly

If networking.firewall.logRefusedPackets and this option are enabled, then only log packets specifically directed at this machine, i.e., not broadcasts or multicasts.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.logReversePathDrops

Logs dropped packets failing the reverse path filter test if the option networking.firewall.checkReversePath is enabled.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.pingLimit

If pings are allowed, this allows setting rate limits on them. If non-null, this option should be in the form of flags like "--limit 1/minute --limit-burst 5"

Type: null or strings concatenated with " "

Default: null

Example: "--limit 1/minute --limit-burst 5"

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.rejectPackets

If set, refused packets are rejected rather than dropped (ignored). This means that an ICMP "port unreachable" error message is sent back to the client (or a TCP RST packet in case of an existing connection). Rejecting packets makes port scanning somewhat easier.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.firewall.trustedInterfaces

Traffic coming in from these interfaces will be accepted unconditionally. Traffic from the loopback (lo) interface will always be accepted.

Type: list of strings

Default: [ ]

Example: [ "enp0s2" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/firewall.nix>
networking.hostConf

The contents of /etc/host.conf. See also host.conf(5).

Type: strings concatenated with "\n"

Default: "multi on"

Example:

''
multi on
reorder on
trim lan
''

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.hostId

The 32-bit host ID of the machine, formatted as 8 hexadecimal characters.

You should try to make this ID unique among your machines. You can generate a random 32-bit ID using the following commands:

head -c 8 /etc/machine-id

(this derives it from the machine-id that systemd generates) or

head -c4 /dev/urandom | od -A none -t x4

Type: null or string

Default: null

Example: "4e98920d"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.hostName

The name of the machine. Leave it empty if you want to obtain it from a DHCP server (if using DHCP).

Type: string

Default: "nixos"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.hosts

Locally defined maps of hostnames to IP addresses.

Type: attribute set of list of stringss

Default: { }

Example:

{
  "127.0.0.1" = [ "foo.bar.baz" ];
  "192.168.0.2" = [ "fileserver.local" "nameserver.local" ];
};

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.interfaces

The configuration for each network interface. If networking.useDHCP is true, then every interface not listed here will be configured using DHCP.

Type: list or attribute set of submodules

Default: { }

Example: { eth0 = { ipv4 = { addresses = [ { address = "131.211.84.78"; prefixLength = 25; } ] ; } ; } ; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.addresses

List of IPv4 addresses that will be statically assigned to the interface.

Type: list of submodules

Default: [ ]

Example: [ { address = "10.0.0.1"; prefixLength = 16; } { address = "192.168.1.1"; prefixLength = 24; } ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.addresses.*.address

IPv4 address of the interface. Leave empty to configure the interface using DHCP.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.addresses.*.prefixLength

Subnet mask of the interface, specified as the number of bits in the prefix (24).

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.routes

List of extra IPv4 static routes that will be assigned to the interface.

Type: list of submodules

Default: [ ]

Example: [ { address = "10.0.0.0"; prefixLength = 16; } { address = "192.168.2.0"; prefixLength = 24; via = "192.168.1.1"; } ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.routes.*.address

IPv4 address of the network.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.routes.*.options

Other route options. See the symbol OPTIONS in the ip-route(8) manual page for the details.

Type: attribute set of strings

Default: { }

Example: { mtu = "1492"; window = "524288"; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.routes.*.prefixLength

Subnet mask of the network, specified as the number of bits in the prefix (24).

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv4.routes.*.via

IPv4 address of the next hop.

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.addresses

List of IPv6 addresses that will be statically assigned to the interface.

Type: list of submodules

Default: [ ]

Example: [ { address = "fdfd:b3f0:482::1"; prefixLength = 48; } { address = "2001:1470:fffd:2098::e006"; prefixLength = 64; } ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.addresses.*.address

IPv6 address of the interface. Leave empty to configure the interface using DHCP.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.addresses.*.prefixLength

Subnet mask of the interface, specified as the number of bits in the prefix (64).

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.routes

List of extra IPv6 static routes that will be assigned to the interface.

Type: list of submodules

Default: [ ]

Example: [ { address = "fdfd:b3f0::"; prefixLength = 48; } { address = "2001:1470:fffd:2098::"; prefixLength = 64; via = "fdfd:b3f0::1"; } ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.routes.*.address

IPv6 address of the network.

Type: string

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.routes.*.options

Other route options. See the symbol OPTIONS in the ip-route(8) manual page for the details.

Type: attribute set of strings

Default: { }

Example: { mtu = "1492"; window = "524288"; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.routes.*.prefixLength

Subnet mask of the network, specified as the number of bits in the prefix (64).

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.ipv6.routes.*.via

IPv6 address of the next hop.

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.macAddress

MAC address of the interface. Leave empty to use the default.

Type: null or string

Default: null

Example: "00:11:22:33:44:55"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.mtu

MTU size for packets leaving the interface. Leave empty to use the default.

Type: null or signed integer

Default: null

Example: 9000

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.name

Name of the interface.

Type: string

Example: "eth0"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.preferTempAddress

When using SLAAC prefer a temporary (IPv6) address over the EUI-64 address for originating connections. This is used to reduce tracking.

Type: boolean

Default: config.networking.enableIPv6

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.proxyARP

Turn on proxy_arp for this device (and proxy_ndp for ipv6). This is mainly useful for creating pseudo-bridges between a real interface and a virtual network such as VPN or a virtual machine for interfaces that don't support real bridging (most wlan interfaces). As ARP proxying acts slightly above the link-layer, below-ip traffic isn't bridged, so things like DHCP won't work. The advantage above using NAT lies in the fact that no IP addresses are shared, so all hosts are reachable/routeable.

WARNING: turns on ip-routing, so if you have multiple interfaces, you should think of the consequence and setup firewall rules to limit this.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.useDHCP

Whether this interface should be configured with dhcp. Null implies the old behavior which depends on whether ip addresses are specified or not.

Type: null or boolean

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.virtual

Whether this interface is virtual and should be created by tunctl. This is mainly useful for creating bridges between a host and a virtual network such as VPN or a virtual machine.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.virtualOwner

In case of a virtual device, the user who owns it.

Type: string

Default: "root"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.interfaces.<name?>.virtualType

The type of interface to create. The default is TUN for an interface name starting with "tun", otherwise TAP.

Type: one of "tun", "tap"

Default: if hasPrefix "tun" name then "tun" else "tap"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.iproute2.enable

Whether to enable copy IP route configuration files.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/config/iproute2.nix>
networking.iproute2.rttablesExtraConfig

Verbatim lines to add to /etc/iproute2/rt_tables

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/iproute2.nix>
networking.localCommands

Shell commands to be executed at the end of the network-setup systemd service. Note that if you are using DHCP to obtain the network configuration, interfaces may not be fully configured yet.

Type: strings concatenated with "\n"

Default: ""

Example: "text=anything; echo You can put \$text here."

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.macvlans

This option allows you to define macvlan interfaces which should be automatically created.

Type: attribute set of submodules

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.macvlans.<name>.interface

The interface the macvlan will transmit packets through.

Type: string

Example: "enp4s0"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.macvlans.<name>.mode

The mode of the macvlan device.

Type: null or string

Default: null

Example: "vepa"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.nameservers

The list of nameservers. It can be left empty if it is auto-detected through DHCP.

Type: list of strings

Default: [ ]

Example: [ "130.161.158.4" "130.161.33.17" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.nat.enable

Whether to enable Network Address Translation (NAT).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.dmzHost

The local IP address to which all traffic that does not match any forwarding rule is forwarded.

Type: null or string

Default: null

Example: "10.0.0.1"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.externalIP

The public IP address to which packets from the local network are to be rewritten. If this is left empty, the IP address associated with the external interface will be used.

Type: null or string

Default: null

Example: "203.0.113.123"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.externalInterface

The name of the external network interface.

Type: null or string

Default: null

Example: "eth1"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.extraCommands

Additional shell commands executed as part of the nat initialisation script.

Type: strings concatenated with "\n"

Default: ""

Example: "iptables -A INPUT -p icmp -j ACCEPT"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.extraStopCommands

Additional shell commands executed as part of the nat teardown script.

Type: strings concatenated with "\n"

Default: ""

Example: "iptables -D INPUT -p icmp -j ACCEPT || true"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.forwardPorts

List of forwarded ports from the external interface to internal destinations by using DNAT.

Type: list of submodules

Default: [ ]

Example: [ { destination = "10.0.0.1:80"; proto = "tcp"; sourcePort = 8080; } ]

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.forwardPorts.*.destination

Forward connection to destination ip:port; to specify a port range, use ip:start-end

Type: string

Example: "10.0.0.1:80"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.forwardPorts.*.loopbackIPs

Public IPs for NAT reflection; for connections to `loopbackip:sourcePort' from the host itself and from other hosts behind NAT

Type: list of strings

Default: [ ]

Example:

[ "55.1.2.3" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.forwardPorts.*.proto

Protocol of forwarded connection

Type: string

Default: "tcp"

Example: "udp"

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.forwardPorts.*.sourcePort

Source port of the external interface; to specify a port range, use a string with a colon (e.g. "60000:61000")

Type: signed integer or string matching the pattern [[:digit:]]+:[[:digit:]]+

Example: 8080

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.internalIPs

The IP address ranges for which to perform NAT. Packets coming from these addresses (on any interface) and destined for the external interface will be rewritten.

Type: list of strings

Default: [ ]

Example: [ "192.168.1.0/24" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.nat.internalInterfaces

The interfaces for which to perform NAT. Packets coming from these interface and destined for the external interface will be rewritten.

Type: list of strings

Default: [ ]

Example: [ "eth0" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/nat.nix>
networking.networkmanager.enable

Whether to use NetworkManager to obtain an IP address and other configuration for all network interfaces that are not manually configured. If enabled, a group networkmanager will be created. Add all users that should have permission to change network settings to this group.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.enableStrongSwan

Enable the StrongSwan plugin.

If you enable this option the networkmanager_strongswan plugin will be added to the networking.networkmanager.packages option so you don't need to to that yourself.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.packages

Extra packages that provide NetworkManager plugins.

Type: list of paths

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.appendNameservers

A list of name servers that should be appended to the ones configured in NetworkManager or received by DHCP.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dhcp

Which program (or internal library) should be used for DHCP.

Type: one of "dhclient", "dhcpcd", "internal"

Default: "dhclient"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dispatcherScripts

A list of scripts which will be executed in response to network events.

Type: list of submodules

Default: [ ]

Example:

[ {
      source = pkgs.writeText "upHook" ''

        if [ "$2" != "up" ]; then
            logger "exit: event $2 != up"
        fi

        # coreutils and iproute are in PATH too
        logger "Device $DEVICE_IFACE coming up"
    '';
    type = "basic";
} ]

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dispatcherScripts.*.source

Path to the hook script.

Type: path

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dispatcherScripts.*.type

Dispatcher hook type. Look up the hooks described at https://developer.gnome.org/NetworkManager/stable/NetworkManager.html and choose the type depending on the output folder. You should then filter the event type (e.g., "up"/"down") from within your script.

Type: one of "basic", "pre-down", "pre-up"

Default: "basic"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dns

Set the DNS (resolv.conf) processing mode.

Options:

"default"

NetworkManager will update /etc/resolv.conf to reflect the nameservers provided by currently active connections.

"dnsmasq"

Enable NetworkManager's dnsmasq integration. NetworkManager will run dnsmasq as a local caching nameserver, using a "split DNS" configuration if you are connected to a VPN, and then update resolv.conf to point to the local nameserver.

It is possible to pass custom options to the dnsmasq instance by adding them to files in the /etc/NetworkManager/dnsmasq.d/ directory.

When multiple upstream servers are available, dnsmasq will initially contact them in parallel and then use the fastest to respond, probing again other servers after some time. This behavior can be modified passing the all-servers or strict-order options to dnsmasq (see the manual page for more details).

Note that this option causes NetworkManager to launch and manage its own instance of the dnsmasq daemon, which is not the same as setting services.dnsmasq.enable = true;.

"unbound"

NetworkManager will talk to unbound and dnssec-triggerd, providing a "split DNS" configuration with DNSSEC support. /etc/resolv.conf will be managed by dnssec-trigger daemon.

"systemd-resolved"

NetworkManager will push the DNS configuration to systemd-resolved.

"none"

NetworkManager will not modify resolv.conf.

Type: one of "default", "dnsmasq", "unbound", "systemd-resolved", "none"

Default: "default"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dynamicHosts.enable

Enabling this option requires the networking.networkmanager.dns option to be set to dnsmasq. If enabled, the directories defined by the networking.networkmanager.dynamicHosts.hostsDirs option will be set up when the service starts. The dnsmasq instance managed by NetworkManager will then watch those directories for hosts files (see the --hostsdir option of dnsmasq). This way a non-privileged user can add or override DNS entries on the local system (depending on what hosts directories that are configured)..

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dynamicHosts.hostsDirs

Defines a set of directories (relative to /run/NetworkManager/hostdirs) that dnsmasq will watch for hosts files.

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dynamicHosts.hostsDirs.<name>.group

The group that will own the hosts directory.

Type: string

Default: "root"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.dynamicHosts.hostsDirs.<name>.user

The user that will own the hosts directory.

Type: string

Default: "root"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.ethernet.macAddress

"XX:XX:XX:XX:XX:XX": MAC address of the interface. permanent: use the permanent MAC address of the device. preserve: don’t change the MAC address of the device upon activation. random: generate a randomized value upon each connect. stable: generate a stable, hashed MAC address.

Type: string or one of "permanent", "preserve", "random", "stable"

Default: "preserve"

Example: "00:11:22:33:44:55"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.extraConfig

Configuration appended to the generated NetworkManager.conf.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.insertNameservers

A list of name servers that should be inserted before the ones configured in NetworkManager or received by DHCP.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.logLevel

Set the default logging verbosity level.

Type: one of "OFF", "ERR", "WARN", "INFO", "DEBUG", "TRACE"

Default: "WARN"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.unmanaged

List of interfaces that will not be managed by NetworkManager. Interface name can be specified here, but if you need more fidelity see "Device List Format" in NetworkManager.conf man page.

Type: list of Concatenated strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.wifi.macAddress

"XX:XX:XX:XX:XX:XX": MAC address of the interface. permanent: use the permanent MAC address of the device. preserve: don’t change the MAC address of the device upon activation. random: generate a randomized value upon each connect. stable: generate a stable, hashed MAC address.

Type: string or one of "permanent", "preserve", "random", "stable"

Default: "preserve"

Example: "00:11:22:33:44:55"

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.wifi.powersave

Whether to enable Wi-Fi power saving.

Type: null or boolean

Default: null

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.networkmanager.wifi.scanRandMacAddress

Whether to enable MAC address randomization of a Wi-Fi device during scanning.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/networking/networkmanager.nix>
networking.nftables.enable

Whether to enable nftables. nftables is a Linux-based packet filtering framework intended to replace frameworks like iptables.

This conflicts with the standard networking firewall, so make sure to disable it before using nftables.

Note that if you have Docker enabled you will not be able to use nftables without intervention. Docker uses iptables internally to setup NAT for containers. This module disables the ip_tables kernel module, however Docker automatically loads the module. Please see [1] for more information.

There are other programs that use iptables internally too, such as libvirt.

[1]: https://github.com/NixOS/nixpkgs/issues/24318#issuecomment-289216273

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/nftables.nix>
networking.nftables.ruleset

The ruleset to be used with nftables. Should be in a format that can be loaded using "/bin/nft -f". The ruleset is updated atomically.

Type: strings concatenated with "\n"

Example:

''
# Check out https://wiki.nftables.org/ for better documentation.
# Table for both IPv4 and IPv6.
table inet filter {
  # Block all incomming connections traffic except SSH and "ping".
  chain input {
    type filter hook input priority 0;

    # accept any localhost traffic
    iifname lo accept

    # accept traffic originated from us
    ct state {established, related} accept

    # ICMP
    # routers may also want: mld-listener-query, nd-router-solicit
    ip6 nexthdr icmpv6 icmpv6 type { destination-unreachable, packet-too-big, time-exceeded, parameter-problem, nd-router-advert, nd-neighbor-solicit, nd-neighbor-advert } accept
    ip protocol icmp icmp type { destination-unreachable, router-advertisement, time-exceeded, parameter-problem } accept

    # allow "ping"
    ip6 nexthdr icmp icmpv6 type echo-request accept
    ip protocol icmp icmp type echo-request accept

    # accept SSH connections (required for a server)
    tcp dport 22 accept

    # count and drop any other traffic
    counter drop
  }

  # Allow all outgoing connections.
  chain output {
    type filter hook output priority 0;
    accept
  }

  chain forward {
    type filter hook forward priority 0;
    accept
  }
}
''

Declared by:

<nixpkgs/nixos/modules/services/networking/nftables.nix>
networking.nftables.rulesetFile

The ruleset file to be used with nftables. Should be in a format that can be loaded using "nft -f". The ruleset is updated atomically.

Type: path

Default: (build of nftables-rules)

Declared by:

<nixpkgs/nixos/modules/services/networking/nftables.nix>
networking.proxy.allProxy

This option specifies the all_proxy environment variable.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.default

This option specifies the default value for httpProxy, httpsProxy, ftpProxy and rsyncProxy.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.ftpProxy

This option specifies the ftp_proxy environment variable.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.httpProxy

This option specifies the http_proxy environment variable.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.httpsProxy

This option specifies the https_proxy environment variable.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.noProxy

This option specifies the no_proxy environment variable. If a default proxy is used and noProxy is null, then noProxy will be set to 127.0.0.1,localhost.

Type: null or string

Default: null

Example: "127.0.0.1,localhost,.localdomain"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.proxy.rsyncProxy

This option specifies the rsync_proxy environment variable.

Type: null or string

Default: null

Example: "http://127.0.0.1:3128"

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.resolvconfOptions

Set the options in /etc/resolv.conf.

Type: list of strings

Default: [ ]

Example: [ "ndots:1" "rotate" ]

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.rxe.enable

Whether to enable RDMA over converged ethernet.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/networking/rxe.nix>
networking.rxe.interfaces

Enable RDMA on the listed interfaces. The corresponding virtual RDMA interfaces will be named rxe0 ... rxeN where the ordering will be as they are named in the list. UDP port 4791 must be open on the respective ethernet interfaces.

Type: list of strings

Default: [ ]

Example: [ "eth0" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/rxe.nix>
networking.search

The list of search paths used when resolving domain names.

Type: list of strings

Default: [ ]

Example: [ "example.com" "local.domain" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.sits

This option allows you to define 6-to-4 interfaces which should be automatically created.

Type: attribute set of submodules

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.sits.<name>.dev

The underlying network device on which the tunnel resides.

Type: null or string

Default: null

Example: "enp4s0f0"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.sits.<name>.local

The address of the local endpoint which the remote side should send packets to.

Type: null or string

Default: null

Example: "10.0.0.22"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.sits.<name>.remote

The address of the remote endpoint to forward traffic over.

Type: null or string

Default: null

Example: "10.0.0.1"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.sits.<name>.ttl

The time-to-live of the connection to the remote tunnel endpoint.

Type: null or signed integer

Default: null

Example: 255

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.supplicant

Interfaces for which to start wpa_supplicant. The supplicant is used to scan for and associate with wireless networks, or to authenticate with 802.1x capable network switches.

The value of this option is an attribute set. Each attribute configures a wpa_supplicant service, where the attribute name specifies the name of the interface that wpa_supplicant operates on. The attribute name can be a space separated list of interfaces. The attribute names WLAN, LAN and DBUS have a special meaning. WLAN and LAN are configurations for universal wpa_supplicant service that is started for each WLAN interface or for each LAN interface, respectively. DBUS defines a device-unrelated wpa_supplicant service that can be accessed through D-Bus.

Type: attribute set of submodules

Default: { }

Example:

{ "wlan0 wlan1" = {
    configFile.path = "/etc/wpa_supplicant.conf";
    userControlled.group = "network";
    extraConf = ''
      ap_scan=1
      p2p_disabled=1
    '';
    extraCmdArgs = "-u -W";
    bridge = "br0";
  };
}

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.bridge

Name of the bridge interface that wpa_supplicant should listen at.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.configFile.path

External wpa_supplicant.conf configuration file. The configuration options defined declaratively within networking.supplicant have precedence over options defined in configFile.

Type: null or path

Default: null

Example:

/etc/wpa_supplicant.conf

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.configFile.writable

Whether the configuration file at configFile.path should be written to by wpa_supplicant.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.driver

Force a specific wpa_supplicant driver.

Type: null or string

Default: "nl80211,wext"

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.extraCmdArgs

Command line arguments to add when executing wpa_supplicant.

Type: string

Default: ""

Example: "-e/var/run/wpa_supplicant/entropy.bin"

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.extraConf

Configuration options for wpa_supplicant.conf. Options defined here have precedence over options in configFile. NOTE: Do not write sensitive data into extraConf as it will be world-readable in the nix-store. For sensitive information use the configFile instead.

Type: strings concatenated with "\n"

Default: ""

Example:

''
ap_scan=1
device_name=My-NixOS-Device
device_type=1-0050F204-1
driver_param=use_p2p_group_interface=1
disable_scan_offload=1
p2p_listen_reg_class=81
p2p_listen_channel=1
p2p_oper_reg_class=81
p2p_oper_channel=1
manufacturer=NixOS
model_name=NixOS_Unstable
model_number=2015
''

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.userControlled.enable

Allow normal users to control wpa_supplicant through wpa_gui or wpa_cli. This is useful for laptop users that switch networks a lot and don't want to depend on a large package such as NetworkManager just to pick nearby access points.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.userControlled.group

Members of this group can control wpa_supplicant.

Type: string

Default: "wheel"

Example: "network"

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.supplicant.<name>.userControlled.socketDir

Directory of sockets for controlling wpa_supplicant.

Type: string

Default: "/var/run/wpa_supplicant"

Declared by:

<nixpkgs/nixos/modules/services/networking/supplicant.nix>
networking.tcpcrypt.enable

Whether to enable opportunistic TCP encryption. If the other end speaks Tcpcrypt, then your traffic will be encrypted; otherwise it will be sent in clear text. Thus, Tcpcrypt alone provides no guarantees -- it is best effort. If, however, a Tcpcrypt connection is successful and any attackers that exist are passive, then Tcpcrypt guarantees privacy.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/tcpcrypt.nix>
networking.timeServers

The set of NTP servers from which to synchronise.

Type: unspecified

Default: [ "0.nixos.pool.ntp.org" "1.nixos.pool.ntp.org" "2.nixos.pool.ntp.org" "3.nixos.pool.ntp.org" ]

Declared by:

<nixpkgs/nixos/modules/config/networking.nix>
networking.useDHCP

Whether to use DHCP to obtain an IP address and other configuration for all network interfaces that are not manually configured.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.useHostResolvConf

In containers, whether to use the resolv.conf supplied by the host.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.useNetworkd

Whether we should use networkd as the network configuration backend or the legacy script based system. Note that this option is experimental, enable at your own risk.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.usePredictableInterfaceNames

Whether to assign predictable names to network interfaces. If enabled, interfaces are assigned names that contain topology information (e.g. wlp3s0) and thus should be stable across reboots. If disabled, names depend on the order in which interfaces are discovered by the kernel, which may change randomly across reboots; for instance, you may find eth0 and eth1 flipping unpredictably.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/hardware/udev.nix>
networking.vlans

This option allows you to define vlan devices that tag packets on top of a physical interface. The value of this option is an attribute set. Each attribute specifies a vlan, with the name specifying the name of the vlan interface.

Type: attribute set of submodules

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vlans.<name>.id

The vlan identifier

Type: signed integer

Example: 1

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vlans.<name>.interface

The interface the vlan will transmit packets through.

Type: string

Example: "enp4s0"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vpnc.services

The names of cisco VPNs and their associated definitions

Type: attribute set of strings

Default: { }

Example:

{ test = ''
    IPSec gateway 192.168.1.1
    IPSec ID someID
    IPSec secret secretKey
    Xauth username name
    Xauth password pass
  '';
}

Declared by:

<nixpkgs/nixos/modules/config/vpnc.nix>
networking.vswitches

This option allows you to define Open vSwitches that connect physical networks together. The value of this option is an attribute set. Each attribute specifies a vswitch, with the attribute name specifying the name of the vswitch's network interface.

Type: attribute set of submodules

Default: { }

Example: { vs0 = { interfaces = [ "eth0" "eth1" ] ; } ; vs1 = { interfaces = [ "eth2" "wlan0" ] ; } ; }

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vswitches.<name>.controllers

Specify the controller targets. For the allowed options see man 8 ovs-vsctl.

Type: list of strings

Default: [ ]

Example: [ "ptcp:6653:[::1]" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vswitches.<name>.extraOvsctlCmds

Commands to manipulate the Open vSwitch database. Every line executed with ovs-vsctl. All commands are bundled together with the operations for adding the interfaces into one atomic operation.

Type: strings concatenated with "\n"

Default: ""

Example:

''
set-fail-mode <switch_name> secure
set Bridge <switch_name> stp_enable=true
''

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vswitches.<name>.interfaces

The physical network interfaces connected by the vSwitch.

Type: list of strings

Example: [ "eth0" "eth1" ]

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.vswitches.<name>.openFlowRules

OpenFlow rules to insert into the Open vSwitch. All openFlowRules are loaded with ovs-ofctl within one atomic operation.

Type: strings concatenated with "\n"

Default: ""

Example:

''
actions=normal
''

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wicd.enable

Whether to start wicd. Wired and wireless network configurations can then be managed by wicd-client.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/wicd.nix>
networking.wireguard.interfaces

Wireguard interfaces.

Type: attribute set of submodules

Default: { }

Example: { wg0 = { ips = [ "192.168.20.4/24" ] ; peers = [ { allowedIPs = [ "192.168.20.1/32" ] ; endpoint = "demo.wireguard.io:12913"; publicKey = "xTIBA5rboUvnH4htodjb6e697QjLERt1NAB4mZqp8Dg="; } ] ; privateKey = "yAnz5TF+lXXJte14tji3zlMNq+hd2rYUIgJBgB3fBmk="; } ; }

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.allowedIPsAsRoutes

Determines whether to add allowed IPs as routes or not.

Type: boolean

Default: true

Example: false

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.ips

The IP addresses of the interface.

Type: list of strings

Default: [ ]

Example: [ "192.168.2.1/24" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.listenPort

16-bit port for listening. Optional; if not specified, automatically generated based on interface name.

Type: null or signed integer

Default: null

Example: 51820

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers

Peers linked to the interface.

Type: list of submodules

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.allowedIPs

List of IP (v4 or v6) addresses with CIDR masks from which this peer is allowed to send incoming traffic and to which outgoing traffic for this peer is directed. The catch-all 0.0.0.0/0 may be specified for matching all IPv4 addresses, and ::/0 may be specified for matching all IPv6 addresses.

Type: list of strings

Example: [ "10.192.122.3/32" "10.192.124.1/24" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.endpoint

Endpoint IP or hostname of the peer, followed by a colon, and then a port number of the peer.

Type: null or string

Default: null

Example: "demo.wireguard.io:12913"

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.persistentKeepalive

This is optional and is by default off, because most users will not need it. It represents, in seconds, between 1 and 65535 inclusive, how often to send an authenticated empty packet to the peer, for the purpose of keeping a stateful firewall or NAT mapping valid persistently. For example, if the interface very rarely sends traffic, but it might at anytime receive traffic from a peer, and it is behind NAT, the interface might benefit from having a persistent keepalive interval of 25 seconds; however, most users will not need this.

Type: null or signed integer

Default: null

Example: 25

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.presharedKey

Base64 preshared key generated by wg genpsk. Optional, and may be omitted. This option adds an additional layer of symmetric-key cryptography to be mixed into the already existing public-key cryptography, for post-quantum resistance.

Warning: Consider using presharedKeyFile instead if you do not want to store the key in the world-readable Nix store.

Type: null or string

Default: null

Example: "rVXs/Ni9tu3oDBLS4hOyAUAa1qTWVA3loR8eL20os3I="

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.presharedKeyFile

File pointing to preshared key as generated by wg pensk. Optional, and may be omitted. This option adds an additional layer of symmetric-key cryptography to be mixed into the already existing public-key cryptography, for post-quantum resistance.

Type: null or string

Default: null

Example: "/private/wireguard_psk"

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.peers.*.publicKey

The base64 public key the peer.

Type: string

Example: "xTIBA5rboUvnH4htodjb6e697QjLERt1NAB4mZqp8Dg="

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.postSetup

Commands called at the end of the interface setup.

Type: strings concatenated with "\n" or list of strings convertible to it

Default: ""

Example:

printf "nameserver 10.200.100.1" | ${pkgs.openresolv}/bin/resolvconf -a wg0 -m 0

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.postShutdown

Commands called after shutting down the interface.

Type: strings concatenated with "\n" or list of strings convertible to it

Default: ""

Example:

${pkgs.openresolv}/bin/resolvconf -d wg0

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.preSetup

Commands called at the start of the interface setup.

Type: strings concatenated with "\n" or list of strings convertible to it

Default: ""

Example:

${pkgs.iproute}/bin/ip netns add foo

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.privateKey

Base64 private key generated by wg genkey.

Warning: Consider using privateKeyFile instead if you do not want to store the key in the world-readable Nix store.

Type: null or string

Default: null

Example: "yAnz5TF+lXXJte14tji3zlMNq+hd2rYUIgJBgB3fBmk="

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.privateKeyFile

Private key file as generated by wg genkey.

Type: null or string

Default: null

Example: "/private/wireguard_key"

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireguard.interfaces.<name>.table

The kernel routing table to add this interface's associated routes to. Setting this is useful for e.g. policy routing ("ip rule") or virtual routing and forwarding ("ip vrf"). Both numeric table IDs and table names (/etc/rt_tables) can be used. Defaults to "main".

Type: string

Default: "main"

Declared by:

<nixpkgs/nixos/modules/services/networking/wireguard.nix>
networking.wireless.enable

Whether to enable wpa_supplicant.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.driver

Force a specific wpa_supplicant driver.

Type: string

Default: "nl80211,wext"

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.extraConfig

Extra lines appended to the configuration file. See wpa_supplicant.conf(5) for available options.

Type: string

Default: ""

Example:

''
p2p_disabled=1
''

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.interfaces

The interfaces wpa_supplicant will use. If empty, it will automatically use all wireless interfaces.

Type: list of strings

Default: [ ]

Example: [ "wlan0" "wlan1" ]

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.iwd.enable

Whether to enable iwd.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/networking/iwd.nix>
networking.wireless.networks

The network definitions to automatically connect to when wpa_supplicant is running. If this parameter is left empty wpa_supplicant will use /etc/wpa_supplicant.conf as the configuration file.

Type: attribute set of submodules

Default: { }

Example:

{ echelon = {
    psk = "abcdefgh";
  };
  "free.wifi" = {};
}

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.auth

Use this option to configure advanced authentication methods like EAP. See wpa_supplicant.conf(5) for example configurations.

Mutually exclusive with psk and pskRaw.

Type: null or string

Default: null

Example:

''
key_mgmt=WPA-EAP
eap=PEAP
identity="user@example.com"
password="secret"
''

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.extraConfig

Extra configuration lines appended to the network block. See wpa_supplicant.conf(5) for available options.

Type: string

Default: ""

Example:

''
bssid_blacklist=02:11:22:33:44:55 02:22:aa:44:55:66
''

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.hidden

Set this to true if the SSID of the network is hidden.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.priority

By default, all networks will get same priority group (0). If some of the networks are more desirable, this field can be used to change the order in which wpa_supplicant goes through the networks when selecting a BSS. The priority groups will be iterated in decreasing priority (i.e., the larger the priority value, the sooner the network is matched against the scan results). Within each priority group, networks will be selected based on security policy, signal strength, etc.

Type: null or signed integer

Default: null

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.psk

The network's pre-shared key in plaintext defaulting to being a network without any authentication.

Be aware that these will be written to the nix store in plaintext!

Mutually exclusive with pskRaw.

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.networks.<name>.pskRaw

The network's pre-shared key in hex defaulting to being a network without any authentication.

Mutually exclusive with psk.

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.userControlled.enable

Allow normal users to control wpa_supplicant through wpa_gui or wpa_cli. This is useful for laptop users that switch networks a lot and don't want to depend on a large package such as NetworkManager just to pick nearby access points.

When using a declarative network specification you cannot persist any settings via wpa_gui or wpa_cli.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wireless.userControlled.group

Members of this group can control wpa_supplicant.

Type: string

Default: "wheel"

Example: "network"

Declared by:

<nixpkgs/nixos/modules/services/networking/wpa_supplicant.nix>
networking.wlanInterfaces

Creating multiple WLAN interfaces on top of one physical WLAN device (NIC).

The name of the WLAN interface corresponds to the name of the attribute. A NIC is referenced by the persistent device name of the WLAN interface that udev assigns to a NIC by default. If a NIC supports multiple WLAN interfaces, then the one NIC can be used as device for multiple WLAN interfaces. If a NIC is used for creating WLAN interfaces, then the default WLAN interface with a persistent device name form udev is not created. A WLAN interface with the persistent name assigned from udev would have to be created explicitly.

Type: attribute set of submodules

Default: { }

Example:

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.device

The name of the underlying hardware WLAN device as assigned by udev.

Type: Concatenated string

Example: "wlp6s0"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.flags

Flags for interface of type monitor.

Type: null or one of "none", "fcsfail", "control", "otherbss", "cook", "active"

Default: null

Example: "control"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.fourAddr

Whether to enable 4-address mode with type managed.

Type: null or boolean

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.mac

MAC address to use for the device. If null, then the MAC of the underlying hardware WLAN device is used.

INFO: Locally administered MAC addresses are of the form:

  • x2:xx:xx:xx:xx:xx

  • x6:xx:xx:xx:xx:xx

  • xA:xx:xx:xx:xx:xx

  • xE:xx:xx:xx:xx:xx

Type: null or string

Default: null

Example: "02:00:00:00:00:01"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.meshID

MeshID of interface with type mesh.

Type: null or Concatenated string

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
networking.wlanInterfaces.<name>.type

The type of the WLAN interface. The type has to be supported by the underlying hardware of the device.

Type: one of "managed", "ibss", "monitor", "mesh", "wds"

Default: "managed"

Example: "ibss"

Declared by:

<nixpkgs/nixos/modules/tasks/network-interfaces.nix>
nix.package

This option specifies the Nix package instance to use throughout the system.

Type: package

Default: "pkgs.nix"

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.allowedUsers

A list of names of users (separated by whitespace) that are allowed to connect to the Nix daemon. As with nix.trustedUsers, you can specify groups by prefixing them with @. Also, you can allow all users by specifying *. The default is *. Note that trusted users are always allowed to connect.

Type: list of strings

Default: [ "*" ]

Example: [ "@wheel" "@builders" "alice" "bob" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.autoOptimiseStore

If set to true, Nix automatically detects files in the store that have identical contents, and replaces them with hard links to a single copy. This saves disk space. If set to false (the default), you can still run nix-store --optimise to get rid of duplicate files.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.binaryCachePublicKeys

List of public keys used to sign binary caches. If nix.requireSignedBinaryCaches is enabled, then Nix will use a binary from a binary cache if and only if it is signed by any of the keys listed here. By default, only the key for cache.nixos.org is included.

Type: list of strings

Example: [ "hydra.nixos.org-1:CNHJZBh9K4tP3EKF6FkkgeVYsS3ohTl+oS0Qa8bezVs=" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.binaryCaches

List of binary cache URLs used to obtain pre-built binaries of Nix packages.

Type: list of strings

Default: [ "https://cache.nixos.org/" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.buildCores

This option defines the maximum number of concurrent tasks during one build. It affects, e.g., -j option for make. The default is 1. The special value 0 means that the builder should use all available CPU cores in the system. Some builds may become non-deterministic with this option; use with care! Packages will only be affected if enableParallelBuilding is set for them.

Type: signed integer

Default: 1

Example: 64

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.buildMachines

This option lists the machines to be used if distributed builds are enabled (see nix.distributedBuilds). Nix will perform derivations on those machines via SSH by copying the inputs to the Nix store on the remote machine, starting the build, then copying the output back to the local Nix store. Each element of the list should be an attribute set containing the machine's host name (hostname), the user name to be used for the SSH connection (sshUser), the Nix system type (system, e.g., "i686-linux"), the maximum number of jobs to be run in parallel on that machine (maxJobs), the path to the SSH private key to be used to connect (sshKey), a list of supported features of the machine (supportedFeatures) and a list of mandatory features of the machine (mandatoryFeatures). The SSH private key should not have a passphrase, and the corresponding public key should be added to ~sshUser/authorized_keys on the remote machine.

Type: list of attribute sets

Default: [ ]

Example:

[ { hostName = "voila.labs.cs.uu.nl";
    sshUser = "nix";
    sshKey = "/root/.ssh/id_buildfarm";
    system = "powerpc-darwin";
    maxJobs = 1;
  }
  { hostName = "linux64.example.org";
    sshUser = "buildfarm";
    sshKey = "/root/.ssh/id_buildfarm";
    system = "x86_64-linux";
    maxJobs = 2;
    speedFactor = 2;
    supportedFeatures = [ "kvm" ];
    mandatoryFeatures = [ "perf" ];
  }
]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.checkConfig

If enabled (the default), checks that Nix can parse the generated nix.conf.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.daemonIONiceLevel

Nix daemon process I/O priority. This priority propagates to build processes. 0 is the default Unix process I/O priority, 7 is the lowest.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.daemonNiceLevel

Nix daemon process priority. This priority propagates to build processes. 0 is the default Unix process priority, 19 is the lowest.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.distributedBuilds

Whether to distribute builds to the machines listed in nix.buildMachines.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.extraOptions

Additional text appended to nix.conf.

Type: strings concatenated with "\n"

Default: ""

Example:

''
gc-keep-outputs = true
gc-keep-derivations = true
''

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.gc.automatic

Automatically run the garbage collector at a specific time.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-gc.nix>
nix.gc.dates

Specification (in the format described by systemd.time(7)) of the time at which the garbage collector will run.

Type: string

Default: "03:15"

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-gc.nix>
nix.gc.options

Options given to nix-collect-garbage when the garbage collector is run automatically.

Type: string

Default: ""

Example: "--max-freed \$((64 * 1024**3))"

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-gc.nix>
nix.maxJobs

This option defines the maximum number of jobs that Nix will try to build in parallel. The default is 1. You should generally set it to the total number of logical cores in your system (e.g., 16 for two CPUs with 4 cores each and hyper-threading).

Type: signed integer or one of "auto"

Default: 1

Example: 64

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.nixPath

The default Nix expression search path, used by the Nix evaluator to look up paths enclosed in angle brackets (e.g. <nixpkgs>).

Type: list of strings

Default: [ "nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos" "nixos-config=/etc/nixos/configuration.nix" "/nix/var/nix/profiles/per-user/root/channels" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.nrBuildUsers

Number of nixbld user accounts created to perform secure concurrent builds. If you receive an error message saying that “all build users are currently in use”, you should increase this value.

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.optimise.automatic

Automatically run the nix store optimiser at a specific time.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-optimise.nix>
nix.optimise.dates

Specification (in the format described by systemd.time(7)) of the time at which the optimiser will run.

Type: list of strings

Default: [ "03:45" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-optimise.nix>
nix.readOnlyStore

If set, NixOS will enforce the immutability of the Nix store by making /nix/store a read-only bind mount. Nix will automatically make the store writable when needed.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.requireSignedBinaryCaches

If enabled (the default), Nix will only download binaries from binary caches if they are cryptographically signed with any of the keys listed in nix.binaryCachePublicKeys. If disabled, signatures are neither required nor checked, so it's strongly recommended that you use only trustworthy caches and https to prevent man-in-the-middle attacks.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.sandboxPaths

Directories from the host filesystem to be included in the sandbox.

Type: list of strings

Default: [ ]

Example: [ "/dev" "/proc" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.sshServe.enable

Whether to enable serving the Nix store as a remote store via SSH.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-ssh-serve.nix>
nix.sshServe.keys

A list of SSH public keys allowed to access the binary cache via SSH.

Type: list of strings

Default: [ ]

Example: [ "ssh-dss AAAAB3NzaC1k... alice@example.org" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-ssh-serve.nix>
nix.sshServe.protocol

The specific Nix-over-SSH protocol to use.

Type: one of "ssh", "ssh-ng"

Default: "ssh"

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-ssh-serve.nix>
nix.trustedBinaryCaches

List of binary cache URLs that non-root users can use (in addition to those specified using nix.binaryCaches) by passing --option binary-caches to Nix commands.

Type: list of strings

Default: [ ]

Example: [ "http://hydra.nixos.org/" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.trustedUsers

A list of names of users that have additional rights when connecting to the Nix daemon, such as the ability to specify additional binary caches, or to import unsigned NARs. You can also specify groups by prefixing them with @; for instance, @wheel means all users in the wheel group.

Type: list of strings

Default: [ "root" ]

Example: [ "root" "alice" "@wheel" ]

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nix.useSandbox

If set, Nix will perform builds in a sandboxed environment that it will set up automatically for each build. This prevents impurities in builds by disallowing access to dependencies outside of the Nix store by using network and mount namespaces in a chroot environment. This is enabled by default even though it has a possible performance impact due to the initial setup time of a sandbox for each build. It doesn't affect derivation hashes, so changing this option will not trigger a rebuild of packages.

Type: boolean or one of "relaxed"

Default: true

Declared by:

<nixpkgs/nixos/modules/services/misc/nix-daemon.nix>
nixpkgs.config

The configuration of the Nix Packages collection. (For details, see the Nixpkgs documentation.) It allows you to set package configuration options.

Ignored when nixpkgs.pkgs is set.

Type: nixpkgs config

Default: { }

Example:

{ allowBroken = true; allowUnfree = true; }

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
nixpkgs.crossSystem

Specifies the platform for which NixOS should be built. Specify this only if it is different from nixpkgs.localSystem, the platform on which NixOS should be built. In other words, specify this to cross-compile NixOS. Otherwise it should be set as null, the default. See its description in the Nixpkgs manual for more details.

Ignored when nixpkgs.pkgs is set.

Type: null or attribute set

Default: (import "${nixos}/../lib").lib.systems.examples.aarch64-multiplatform

Example: { config = "aarch64-unknown-linux-gnu"; system = "aarch64-linux"; }

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
nixpkgs.localSystem

Specifies the platform on which NixOS should be built. When nixpkgs.crossSystem is unset, it also specifies the platform for which NixOS should be built. If this option is unset, it defaults to the platform type of the machine where evaluation happens. Specifying this option is useful when doing distributed multi-platform deployment, or when building virtual machines. See its description in the Nixpkgs manual for more details.

Ignored when nixpkgs.pkgs is set.

Type: attribute set

Default: (import "${nixos}/../lib").lib.systems.examples.aarch64-multiplatform

Example: { config = "aarch64-unknown-linux-gnu"; system = "aarch64-linux"; }

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
nixpkgs.overlays

List of overlays to use with the Nix Packages collection. (For details, see the Nixpkgs documentation.) It allows you to override packages globally. This is a function that takes as an argument the original Nixpkgs. The first argument should be used for finding dependencies, and the second should be used for overriding recipes.

Ignored when nixpkgs.pkgs is set.

Type: list of nixpkgs overlays

Default: [ ]

Example:

[ (self: super: {
    openssh = super.openssh.override {
      hpnSupport = true;
      kerberos = self.libkrb5;
    };
  };
) ]

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
nixpkgs.pkgs

This is the evaluation of Nixpkgs that will be provided to all NixOS modules. Defining this option has the effect of ignoring the other options that would otherwise be used to evaluate Nixpkgs, because those are arguments to the default value. The default value imports the Nixpkgs source files relative to the location of this NixOS module, because NixOS and Nixpkgs are distributed together for consistency, so the nixos in the default value is in fact a relative path. The config, overlays, localSystem, and crossSystem come from this option's siblings.

This option can be used by applications like NixOps to increase the performance of evaluation, or to create packages that depend on a container that should be built with the exact same evaluation of Nixpkgs, for example. Applications like this should set their default value using lib.mkDefault, so user-provided configuration can override it without using lib.

Note that using a distinct version of Nixpkgs with NixOS may be an unexpected source of problems. Use this option with care.

Type: An evaluation of Nixpkgs; the top level attribute set of packages

Default: import "${nixos}/.." { inherit (cfg) config overlays localSystem crossSystem; }

Example:

import <nixpkgs> {}

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
nixpkgs.system

Specifies the Nix platform type on which NixOS should be built. It is better to specify nixpkgs.localSystem instead.

{
  nixpkgs.system = ..;
}

is the same as

{
  nixpkgs.localSystem.system = ..;
}

See nixpkgs.localSystem for more information.

Ignored when nixpkgs.localSystem is set. Ignored when nixpkgs.pkgs is set.

Type: string

Default: { system = "x86_64-linux"; }

Example: "i686-linux"

Declared by:

<nixpkgs/nixos/modules/misc/nixpkgs.nix>
power.ups.enable

Enables support for Power Devices, such as Uninterruptible Power Supplies, Power Distribution Units and Solar Controllers.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.maxStartDelay

This can be set as a global variable above your first UPS definition and it can also be set in a UPS section. This value controls how long upsdrvctl will wait for the driver to finish starting. This keeps your system from getting stuck due to a broken driver or UPS.

Type: signed integer

Default: 45

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.mode

The MODE determines which part of the NUT is to be started, and which configuration files must be modified.

The values of MODE can be:

- none: NUT is not configured, or use the Integrated Power Management, or use some external system to startup NUT components. So nothing is to be started.

- standalone: This mode address a local only configuration, with 1 UPS protecting the local system. This implies to start the 3 NUT layers (driver, upsd and upsmon) and the matching configuration files. This mode can also address UPS redundancy.

- netserver: same as for the standalone configuration, but also need some more ACLs and possibly a specific LISTEN directive in upsd.conf. Since this MODE is opened to the network, a special care should be applied to security concerns.

- netclient: this mode only requires upsmon.

Type: string

Default: "standalone"

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.schedulerRules

File which contains the rules to handle UPS events.

Type: string

Example: "/etc/nixos/upssched.conf"

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups

This is where you configure all the UPSes that this system will be monitoring directly. These are usually attached to serial ports, but USB devices are also supported.

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.description

Description of the UPS.

Type: Concatenated string

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.directives

List of configuration directives for this UPS.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.driver

Specify the program to run to talk to this UPS. apcsmart, bestups, and sec are some examples.

Type: string

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.maxStartDelay

This can be set as a global variable above your first UPS definition and it can also be set in a UPS section. This value controls how long upsdrvctl will wait for the driver to finish starting. This keeps your system from getting stuck due to a broken driver or UPS.

Type: null or signed integer

Default: null

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.port

The serial port to which your UPS is connected. /dev/ttyS0 is usually the first port on Linux boxes, for example.

Type: string

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.shutdownOrder

When you have multiple UPSes on your system, you usually need to turn them off in a certain order. upsdrvctl shuts down all the 0s, then the 1s, 2s, and so on. To exclude a UPS from the shutdown sequence, set this to -1.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
power.ups.ups.<name>.summary

Lines which would be added inside ups.conf for handling this UPS.

Type: Concatenated string

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/monitoring/ups.nix>
powerManagement.enable

Whether to enable power management. This includes support for suspend-to-RAM and powersave features on laptops.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/config/power-management.nix>
powerManagement.cpuFreqGovernor

Configure the governor used to regulate the frequence of the available CPUs. By default, the kernel configures the performance governor.

Type: null or string

Default: null

Example: "ondemand"

Declared by:

<nixpkgs/nixos/modules/tasks/cpu-freq.nix>
powerManagement.powerDownCommands

Commands executed when the machine powers down. That is, they're executed both when the system shuts down and when it goes to suspend or hibernation.

Type: strings concatenated with "\n"

Default: ""

Example:

"${pkgs.hdparm}/sbin/hdparm -B 255 /dev/sda"

Declared by:

<nixpkgs/nixos/modules/config/power-management.nix>
powerManagement.powerUpCommands

Commands executed when the machine powers up. That is, they're executed both when the system first boots and when it resumes from suspend or hibernation.

Type: strings concatenated with "\n"

Default: ""

Example:

"${pkgs.hdparm}/sbin/hdparm -B 255 /dev/sda"

Declared by:

<nixpkgs/nixos/modules/config/power-management.nix>
powerManagement.powertop.enable

Whether to enable powertop auto tuning on startup.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/tasks/powertop.nix>
powerManagement.resumeCommands

Commands executed after the system resumes from suspend-to-RAM.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/config/power-management.nix>
powerManagement.scsiLinkPolicy

SCSI link power management policy. The kernel default is "max_performance".

"med_power_with_dipm" is supported by kernel versions 4.15 and newer.

Type: null or one of "min_power", "max_performance", "medium_power", "med_power_with_dipm"

Default: null

Declared by:

<nixpkgs/nixos/modules/tasks/scsi-link-power-management.nix>
programs.adb.enable

Whether to configure system to use Android Debug Bridge (adb). To grant access to a user, it must be part of adbusers group: users.users.alice.extraGroups = ["adbusers"];

Type: boolean

Default: false

Related packages:

  • pkgs.androidenv.platformTools (android-platform-tools-r26.0.2): ???.

Declared by:

<nixpkgs/nixos/modules/programs/adb.nix>
programs.atop.settings

Parameters to be written to /etc/atoprc.

Type: attribute set

Default: { }

Example: { flags = "a1f"; interval = 5; }

Declared by:

<nixpkgs/nixos/modules/programs/atop.nix>
programs.bash.enableCompletion

Enable Bash completion for all interactive bash shells.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bash.interactiveShellInit

Shell script code called during interactive bash shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bash.loginShellInit

Shell script code called during login bash shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bash.promptInit

Shell script code used to initialise the bash prompt.

Type: strings concatenated with "\n"

Default:

''
# Provide a nice prompt if the terminal supports it.
if [ "$TERM" != "dumb" -o -n "$INSIDE_EMACS" ]; then
  PROMPT_COLOR="1;31m"
  let $UID && PROMPT_COLOR="1;32m"
  PS1="\n\[\033[$PROMPT_COLOR\][\u@\h:\w]\\$\[\033[0m\] "
  if test "$TERM" = "xterm"; then
    PS1="\[\033]2;\h:\u:\w\007\]$PS1"
  fi
fi
''

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bash.shellAliases

Set of aliases for bash shell. See environment.shellAliases for an option format description.

Type: attribute set

Default: { l = "ls -alh"; ll = "ls -l"; ls = "ls --color=tty"; }

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bash.shellInit

Shell script code called during bash shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/bash/bash.nix>
programs.bcc.enable

Whether to enable bcc.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/bcc.nix>
programs.browserpass.enable

Whether to enable the NativeMessaging configuration for Chromium, Chrome, and Vivaldi..

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/browserpass.nix>
programs.ccache.enable

Whether to enable CCache.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/ccache.nix>
programs.ccache.packageNames

Nix top-level packages to be compiled using CCache

Type: list of strings

Default: [ ]

Example: [ "wxGTK30" "qt48" "ffmpeg_3_3" "libav_all" ]

Declared by:

<nixpkgs/nixos/modules/programs/ccache.nix>
programs.ccache.cacheDir

CCache directory

Type: path

Default: "/var/cache/ccache"

Declared by:

<nixpkgs/nixos/modules/programs/ccache.nix>
programs.cdemu.enable

cdemu for members of programs.cdemu.group.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/cdemu.nix>
programs.cdemu.group

Group that users must be in to use cdemu.

Type: unspecified

Default: "cdrom"

Declared by:

<nixpkgs/nixos/modules/programs/cdemu.nix>
programs.cdemu.gui

Whether to install the cdemu GUI (gCDEmu).

Type: unspecified

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/cdemu.nix>
programs.cdemu.image-analyzer

Whether to install the image analyzer.

Type: unspecified

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/cdemu.nix>
programs.chromium.enable

Whether to enable chromium policies.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.chromium.defaultSearchProviderSearchURL

Chromium default search provider url.

Type: null or string

Default: null

Example: "https://encrypted.google.com/search?q={searchTerms}&{google:RLZ}{google:originalQueryForSuggestion}{google:assistedQueryStats}{google:searchFieldtrialParameter}{google:searchClient}{google:sourceId}{google:instantExtendedEnabledParameter}ie={inputEncoding}"

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.chromium.defaultSearchProviderSuggestURL

Chromium default search provider url for suggestions.

Type: null or string

Default: null

Example: "https://encrypted.google.com/complete/search?output=chrome&q={searchTerms}"

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.chromium.extensions

List of chromium extensions to install. For list of plugins ids see id in url of extensions on chrome web store page.

Type: list of strings

Default: [ ]

Example:

[
  "chlffgpmiacpedhhbkiomidkjlcfhogd" # pushbullet
  "mbniclmhobmnbdlbpiphghaielnnpgdp" # lightshot
  "gcbommkclmclpchllfjekcdonpmejbdp" # https everywhere
  "cjpalhdlnbpafiamejdnhcphjbkeiagm" # ublock origin
]

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.chromium.extraOpts

Extra chromium policy options, see https://www.chromium.org/administrators/policy-list-3 for a list of avalible options

Type: attribute set

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.chromium.homepageLocation

Chromium default homepage

Type: null or string

Default: null

Example: "https://nixos.org"

Declared by:

<nixpkgs/nixos/modules/programs/chromium.nix>
programs.command-not-found.enable

Whether interactive shells should show which Nix package (if any) provides a missing command.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/command-not-found/command-not-found.nix>
programs.command-not-found.dbPath

Absolute path to programs.sqlite.

By default this file will be provided by your channel (nixexprs.tar.xz).

Type: path

Default: "/nix/var/nix/profiles/per-user/root/channels/nixos/programs.sqlite"

Declared by:

<nixpkgs/nixos/modules/programs/command-not-found/command-not-found.nix>
programs.criu.enable

Install criu along with necessary kernel options.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/criu.nix>
programs.dconf.enable

Whether to enable dconf.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/dconf.nix>
programs.digitalbitbox.enable

Installs the Digital Bitbox application and enables the complementary hardware module.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/digitalbitbox/default.nix>
programs.digitalbitbox.package

The Digital Bitbox package to use. This can be used to install a package with udev rules that differ from the defaults.

Type: package

Default: "pkgs.digitalbitbox"

Declared by:

<nixpkgs/nixos/modules/programs/digitalbitbox/default.nix>
programs.firejail.enable

Whether to enable firejail.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/firejail.nix>
programs.firejail.wrappedBinaries

Wrap the binaries in firejail and place them in the global path.

You will get file collisions if you put the actual application binary in the global environment and applications started via .desktop files are not wrapped if they specify the absolute path to the binary.

Type: attribute set

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/firejail.nix>
programs.fish.enable

Whether to configure fish as an interactive shell.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.interactiveShellInit

Shell script code called during interactive fish shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.loginShellInit

Shell script code called during fish login shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.promptInit

Shell script code used to initialise fish prompt.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.shellAliases

Set of aliases for fish shell. See environment.shellAliases for an option format description.

Type: attribute set

Default: { l = "ls -alh"; ll = "ls -l"; ls = "ls --color=tty"; }

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.shellInit

Shell script code called during fish shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.vendor.completions.enable

Whether fish should use completion files provided by other packages.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.vendor.config.enable

Whether fish should source configuration snippets provided by other packages.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.fish.vendor.functions.enable

Whether fish should autoload fish functions provided by other packages.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/fish.nix>
programs.gnupg.agent.enable

Enables GnuPG agent with socket-activation for every user session.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gnupg.nix>
programs.gnupg.agent.enableBrowserSocket

Enable browser socket for GnuPG agent.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gnupg.nix>
programs.gnupg.agent.enableExtraSocket

Enable extra socket for GnuPG agent.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gnupg.nix>
programs.gnupg.agent.enableSSHSupport

Enable SSH agent support in GnuPG agent. Also sets SSH_AUTH_SOCK environment variable correctly. This will disable socket-activation and thus always start a GnuPG agent per user session.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gnupg.nix>
programs.gnupg.dirmngr.enable

Enables GnuPG network certificate management daemon with socket-activation for every user session.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gnupg.nix>
programs.gphoto2.enable

Whether to configure system to use gphoto2. To grant digital camera access to a user, the user must be part of the camera group: users.users.alice.extraGroups = ["camera"];

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/gphoto2.nix>
programs.iftop.enable

Whether to enable iftop + setcap wrapper.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/iftop.nix>
programs.java.enable

Install and setup the Java development kit.

Note: This adds JAVA_HOME to the global environment, by sourcing the jdk's setup-hook on shell init. It is equivalent to starting a shell through 'nix-shell -p jdk', or roughly the following system-wide configuration:

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/java.nix>
programs.java.package

Java package to install. Typical values are pkgs.jdk or pkgs.jre.

Type: package

Default: "pkgs.jdk"

Declared by:

<nixpkgs/nixos/modules/programs/java.nix>
programs.kbdlight.enable

Whether to enable kbdlight.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/kbdlight.nix>
programs.less.enable

Whether to enable less.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.clearDefaultCommands

Clear all default commands. You should remember to set the quit key. Otherwise you will not be able to leave less without killing it.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.commands

Defines new command keys.

Type: attribute set of strings

Default: { }

Example: { h = "noaction 5e("; l = "noaction 5e)"; }

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.configFile

Path to lesskey configuration file.

configFile takes precedence over commands, clearDefaultCommands, lineEditingKeys, and envVariables.

Type: null or path

Default: null

Example:

$${pkgs.my-configs}/lesskey

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.envVariables

Defines environment variables.

Type: attribute set of strings

Default: { }

Example: { LESS = "--quit-if-one-screen"; }

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.lessclose

When less closes a file opened in such a way, it will call another program, called the input postprocessor, which may perform any desired clean-up action (such as deleting the replacement file created by LESSOPEN).

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.lessopen

Before less opens a file, it first gives your input preprocessor a chance to modify the way the contents of the file are displayed.

Type: null or string

Default: "|\${pkgs.lesspipe}/bin/lesspipe.sh %s"

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.less.lineEditingKeys

Defines new line-editing keys.

Type: attribute set of strings

Default: { }

Example: { e = "abort"; }

Declared by:

<nixpkgs/nixos/modules/programs/less.nix>
programs.light.enable

Whether to install Light backlight control with setuid wrapper.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/light.nix>
programs.mosh.enable

Whether to enable mosh. Note, this will open ports in your firewall!

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/mosh.nix>
programs.mosh.withUtempter

Whether to enable libutempter for mosh. This is required so that mosh can write to /var/run/utmp (which can be queried with `who` to display currently connected user sessions). Note, this will add a guid wrapper for the group utmp!

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/mosh.nix>
programs.mtr.enable

Whether to add mtr to the global environment and configure a setcap wrapper for it.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/mtr.nix>
programs.nano.nanorc

The system-wide nano configuration. See nanorc(5).

Type: strings concatenated with "\n"

Default: ""

Example:

''
set nowrap
set tabstospaces
set tabsize 2
''

Declared by:

<nixpkgs/nixos/modules/programs/nano.nix>
programs.nano.syntaxHighlight

Whether to enable syntax highlight for various languages.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/nano.nix>
programs.npm.enable

Whether to enable npm global config.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/npm.nix>
programs.npm.npmrc

The system-wide npm configuration. See https://docs.npmjs.com/misc/config.

Type: strings concatenated with "\n"

Default:

''
prefix = ''${HOME}/.npm
''

Example:

''
prefix = ''${HOME}/.npm
https-proxy=proxy.example.com
init-license=MIT
init-author-url=http://npmjs.org
color=true
''

Declared by:

<nixpkgs/nixos/modules/programs/npm.nix>
programs.oblogout.enable

Whether to install OBLogout and create /etc/oblogout.conf. See ${pkgs.oblogout}/share/doc/README.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.bgcolor

Colour name or hex code (#ffffff) of the background color.

Type: string

Default: "black"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.buttons

List and order of buttons to show.

Type: string

Default: "cancel, logout, restart, shutdown, suspend, hibernate"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.buttontheme

Icon theme for the buttons, must be in the themes folder of the package, or in ~/.themes/<name>/oblogout/.

Type: string

Default: "simplistic"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.cancel

Cancel logout/shutdown shortcut.

Type: string

Default: "Escape"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.clock

Command to lock screen.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.clogout

Command to logout.

Type: string

Default: "openbox --exit"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.cswitchuser

Command to switch user.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.hibernate

Hibernate shortcut.

Type: string

Default: "H"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.lock

Lock session shortcut.

Type: string

Default: "K"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.logout

Logout shortcut.

Type: string

Default: "L"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.opacity

Opacity percentage of Cairo rendered backgrounds.

Type: signed integer

Default: 70

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.restart

Restart shortcut.

Type: string

Default: "R"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.shutdown

Shutdown shortcut.

Type: string

Default: "S"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.oblogout.suspend

Suspend shortcut.

Type: string

Default: "U"

Declared by:

<nixpkgs/nixos/modules/programs/oblogout.nix>
programs.plotinus.enable

Whether to enable the Plotinus GTK+3 plugin. Plotinus provides a popup (triggered by Ctrl-Shift-P) to search the menus of a compatible application.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/plotinus.nix>
programs.qt5ct.enable

Whether to enable the Qt5 Configuration Tool (qt5ct), a program that allows users to configure Qt5 settings (theme, font, icons, etc.) under desktop environments or window manager without Qt integration.

Official home page: https://sourceforge.net/projects/qt5ct/

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/qt5ct.nix>
programs.rootston.enable

Whether to enable rootston, the reference compositor for wlroots. The purpose of rootston is to test and demonstrate the features of wlroots (if you want a real Wayland compositor you should e.g. use Sway instead). You can manually start the compositor by running "rootston" from a terminal.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/rootston.nix>
programs.rootston.config

Default configuration for rootston (used when called without any parameters).

Type: string

Default:

''
[keyboard]
meta-key = Logo

# Sway/i3 like Keybindings
# Maps key combinations with commands to execute
# Commands include:
# - "exit" to stop the compositor
# - "exec" to execute a shell command
# - "close" to close the current view
# - "next_window" to cycle through windows
[bindings]
Logo+Shift+e = exit
Logo+q = close
Logo+m = maximize
Alt+Tab = next_window
Logo+Return = exec weston-terminal
Logo+d = exec rofi -show run
''

Declared by:

<nixpkgs/nixos/modules/programs/rootston.nix>
programs.rootston.configFile

Path to the default rootston configuration file (the "config" option will have no effect if you change the path).

Type: path

Default: "/etc/rootston.ini"

Example:

${pkgs.rootston}/etc/rootston.ini

Declared by:

<nixpkgs/nixos/modules/programs/rootston.nix>
programs.rootston.extraPackages

Extra packages to be installed system wide.

Type: list of packages

Default: with pkgs; [ westonLite xwayland rofi ]

Example:

[ ]

Declared by:

<nixpkgs/nixos/modules/programs/rootston.nix>
programs.rootston.extraSessionCommands

Shell commands executed just before rootston is started.

Type: strings concatenated with "\n"

Default: ""

Example:

''
# Define a keymap (US QWERTY is the default)
export XKB_DEFAULT_LAYOUT=de,us
export XKB_DEFAULT_VARIANT=nodeadkeys
export XKB_DEFAULT_OPTIONS=grp:alt_shift_toggle,caps:escape
''

Declared by:

<nixpkgs/nixos/modules/programs/rootston.nix>
programs.screen.screenrc

The contents of /etc/screenrc file.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/screen.nix>
programs.sedutil.enable

Whether to enable sedutil.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/sedutil.nix>
programs.singularity.enable

Whether to enable Singularity.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/singularity.nix>
programs.slock.enable

Whether to install slock screen locker with setuid wrapper.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/slock.nix>
programs.spacefm.enable

Whether to install SpaceFM and create /etc/spacefm/spacefm.conf.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/spacefm.nix>
programs.spacefm.settings

The system-wide spacefm configuration. Parameters to be written to /etc/spacefm/spacefm.conf. Refer to the relevant entry in the SpaceFM manual.

Type: attribute set

Default: { graphical_su = "\${pkgs.gksu}/bin/gksu"; terminal_su = "\${pkgs.sudo}/bin/sudo"; tmp_dir = "/tmp"; }

Example:

{
          tmp_dir = "/tmp";
          terminal_su = "${pkgs.sudo}/bin/sudo";
          graphical_su = "${pkgs.gksu}/bin/gksu";
        }

Declared by:

<nixpkgs/nixos/modules/programs/spacefm.nix>
programs.ssh.package

The package used for the openssh client and daemon.

Type: package

Default: "pkgs.openssh"

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.agentTimeout

How long to keep the private keys in memory. Use null to keep them forever.

Type: null or string

Default: null

Example: "1h"

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.askPassword

Program used by SSH to ask for passwords.

Type: string

Default: "\${pkgs.x11_ssh_askpass}/libexec/x11-ssh-askpass"

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.extraConfig

Extra configuration text appended to ssh_config. See ssh_config(5) for help.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.forwardX11

Whether to request X11 forwarding on outgoing connections by default. This is useful for running graphical programs on the remote machine and have them display to your local X11 server. Historically, this value has depended on the value used by the local sshd daemon, but there really isn't a relation between the two. Note: there are some security risks to forwarding an X11 connection. NixOS's X server is built with the SECURITY extension, which prevents some obvious attacks. To enable or disable forwarding on a per-connection basis, see the -X and -x options to ssh. The -Y option to ssh enables trusted forwarding, which bypasses the SECURITY extension.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.hostKeyAlgorithms

Specifies the host key algorithms that the client wants to use in order of preference.

Type: list of strings

Default: [ "+ssh-dss" ]

Example: [ "ssh-ed25519" "ssh-rsa" ]

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.knownHosts

The set of system-wide known SSH hosts.

Type: list or attribute set of submodules

Default: { }

Example:

[
  {
    hostNames = [ "myhost" "myhost.mydomain.com" "10.10.1.4" ];
    publicKeyFile = ./pubkeys/myhost_ssh_host_dsa_key.pub;
  }
  {
    hostNames = [ "myhost2" ];
    publicKeyFile = ./pubkeys/myhost2_ssh_host_dsa_key.pub;
  }
]

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.knownHosts.<name?>.hostNames

A list of host names and/or IP numbers used for accessing the host's ssh service.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.knownHosts.<name?>.publicKey

The public key data for the host. You can fetch a public key from a running SSH server with the ssh-keyscan command. The public key should not include any host names, only the key type and the key itself.

Type: null or string

Default: null

Example: "ecdsa-sha2-nistp521 AAAAE2VjZHN...UEPg=="

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.knownHosts.<name?>.publicKeyFile

The path to the public key file for the host. The public key file is read at build time and saved in the Nix store. You can fetch a public key file from a running SSH server with the ssh-keyscan command. The content of the file should follow the same format as described for the publicKey option.

Type: null or path

Default: null

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.pubkeyAcceptedKeyTypes

Specifies the key types that will be used for public key authentication.

Type: list of strings

Default: [ "+ssh-dss" ]

Example: [ "ssh-ed25519" "ssh-rsa" ]

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.setXAuthLocation

Whether to set the path to xauth for X11-forwarded connections. This causes a dependency on X11 packages.

Type: boolean

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.ssh.startAgent

Whether to start the OpenSSH agent when you log in. The OpenSSH agent remembers private keys for you so that you don't have to type in passphrases every time you make an SSH connection. Use ssh-add to add a key to the agent.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/ssh.nix>
programs.sway.enable

Whether to enable the tiling Wayland compositor Sway. After adding yourself to the "sway" group you can manually launch Sway by executing "sway" from a terminal. If you call "sway" with any parameters the extraSessionCommands won't be executed and Sway won't be launched with dbus-launch.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/sway.nix>
programs.sway.extraPackages

Extra packages to be installed system wide.

Type: list of packages

Default: with pkgs; [ i3status xwayland rxvt_unicode dmenu ];

Example:

with pkgs; [
  i3lock light termite
]

Declared by:

<nixpkgs/nixos/modules/programs/sway.nix>
programs.sway.extraSessionCommands

Shell commands executed just before Sway is started.

Type: strings concatenated with "\n"

Default: ""

Example:

''
# Define a keymap (US QWERTY is the default)
export XKB_DEFAULT_LAYOUT=de,us
export XKB_DEFAULT_VARIANT=nodeadkeys
export XKB_DEFAULT_OPTIONS=grp:alt_shift_toggle,caps:escape
# Change the Keyboard repeat delay and rate
export WLC_REPEAT_DELAY=660
export WLC_REPEAT_RATE=25
''

Declared by:

<nixpkgs/nixos/modules/programs/sway.nix>
programs.sysdig.enable

Whether to enable sysdig.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/sysdig.nix>
programs.systemtap.enable

Install systemtap along with necessary kernel options.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/systemtap.nix>
programs.thefuck.enable

Whether to enable thefuck.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/thefuck.nix>
programs.thefuck.alias

`thefuck` needs an alias to be configured. The default value is `fuck`, but you can use anything else as well.

Type: Concatenated string

Default: "fuck"

Declared by:

<nixpkgs/nixos/modules/programs/thefuck.nix>
programs.tmux.enable

Whenever to configure tmux system-wide.

Type: boolean

Default: false

Related packages:

  • pkgs.tmux (tmux-2.7): Terminal multiplexer.

    tmux is intended to be a modern, BSD-licensed alternative to programs such as GNU screen. Major features include:
    
             * A powerful, consistent, well-documented and easily scriptable command interface.
             * A window may be split horizontally and vertically into panes.
             * Panes can be freely moved and resized, or arranged into preset layouts.
             * Support for UTF-8 and 256-colour terminals.
             * Copy and paste with multiple buffers.
             * Interactive menus to select windows, sessions or clients.
             * Change the current window by searching for text in the target.
             * Terminal locking, manually or after a timeout.
             * A clean, easily extended, BSD-licensed codebase, under active development.
    

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.aggressiveResize

Resize the window to the size of the smallest session for which it is the current window.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.baseIndex

Base index for windows and panes.

Type: signed integer

Default: 0

Example: 1

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.clock24

Use 24 hour clock.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.customPaneNavigationAndResize

Override the hjkl and HJKL bindings for pane navigation and resizing in VI mode.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.escapeTime

Time in milliseconds for which tmux waits after an escape is input.

Type: signed integer

Default: 500

Example: 0

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.extraTmuxConf

Additional contents of /etc/tmux.conf

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.historyLimit

Maximum number of lines held in window history.

Type: signed integer

Default: 2000

Example: 5000

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.keyMode

VI or Emacs style shortcuts.

Type: one of "emacs", "vi"

Default: "emacs"

Example: "vi"

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.newSession

Automatically spawn a session if trying to attach and none are running.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.resizeAmount

Number of lines/columns when resizing.

Type: signed integer

Default: 5

Example: 10

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.reverseSplit

Reverse the window split shortcuts.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.secureSocket

Store tmux socket under /run, which is more secure than /tmp, but as a downside it doesn't survive user logout.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.shortcut

Ctrl following by this key is used as the main shortcut.

Type: string

Default: "b"

Example: "a"

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.tmux.terminal

Set the $TERM variable.

Type: string

Default: "screen"

Example: "screen-256color"

Declared by:

<nixpkgs/nixos/modules/programs/tmux.nix>
programs.udevil.enable

Whether to enable udevil.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/udevil.nix>
programs.vim.defaultEditor

When enabled, installs vim and configures vim to be the default editor using the EDITOR environment variable.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/vim.nix>
programs.way-cooler.enable

Whether to enable way-cooler.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/way-cooler.nix>
programs.way-cooler.enableBar

Whether to enable an unofficial bar.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/way-cooler.nix>
programs.way-cooler.extraPackages

Extra packages to be installed system wide.

Type: list of packages

Default: [ (build of weston-5.0.0) (build of xwayland-1.19.6) (build of dmenu-4.8) ]

Example:

with pkgs; [
  westonLite xwayland dmenu
]

Declared by:

<nixpkgs/nixos/modules/programs/way-cooler.nix>
programs.way-cooler.extraSessionCommands

Shell commands executed just before way-cooler is started.

Type: strings concatenated with "\n"

Default: ""

Example:

''
export XKB_DEFAULT_LAYOUT=us,de
export XKB_DEFAULT_VARIANT=,nodeadkeys
export XKB_DEFAULT_OPTIONS=grp:caps_toggle,
''

Declared by:

<nixpkgs/nixos/modules/programs/way-cooler.nix>
programs.wireshark.enable

Whether to add Wireshark to the global environment and configure a setcap wrapper for 'dumpcap' for users in the 'wireshark' group.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/wireshark.nix>
programs.wireshark.package

Which Wireshark package to install in the global environment.

Type: package

Default: "pkgs.wireshark-cli"

Declared by:

<nixpkgs/nixos/modules/programs/wireshark.nix>
programs.xfs_quota.projects

Setup of xfs_quota projects. Make sure the filesystem is mounted with the pquota option.

Type: attribute set of submodules

Default: { }

Example: { projname = { id = 50; path = "/xfsprojects/projname"; sizeHardLimit = "50g"; } ; }

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xfs_quota.projects.<name>.fileSystem

XFS filesystem hosting the xfs_quota project.

Type: string

Default: "/"

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xfs_quota.projects.<name>.id

Project ID.

Type: signed integer

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xfs_quota.projects.<name>.path

Project directory.

Type: string

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xfs_quota.projects.<name>.sizeHardLimit

Hard limit of the project size.

Type: null or string

Default: null

Example: "50g"

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xfs_quota.projects.<name>.sizeSoftLimit

Soft limit of the project size

Type: null or string

Default: null

Example: "30g"

Declared by:

<nixpkgs/nixos/modules/programs/xfs_quota.nix>
programs.xonsh.enable

Whether to configure xonsh as an interactive shell.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/xonsh.nix>
programs.xonsh.package

xonsh package to use.

Type: package

Example:

pkgs.xonsh.override { configFile = "/path/to/xonshrc"; }

Declared by:

<nixpkgs/nixos/modules/programs/xonsh.nix>
programs.xonsh.config

Control file to customize your shell behavior.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/xonsh.nix>
programs.xss-lock.enable

Whether to enable xss-lock.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/xss-lock.nix>
programs.xss-lock.lockerCommand

Locker to be used with xsslock

Type: Concatenated string

Example: "xlock"

Declared by:

<nixpkgs/nixos/modules/programs/xss-lock.nix>
programs.yabar.enable

Whether to enable yabar.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.package

The package which contains the `yabar` binary.

Nixpkgs provides the `yabar` and `yabar-unstable` derivations since 18.03, so it's possible to choose.

Type: package

Default: (build of yabar-unstable-2018-01-18)

Example:

pkgs.yabar

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars

List of bars that should be rendered by yabar.

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.extra

An attribute set which contains further attributes of a bar.

Type: attribute set of Concatenated strings

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.font

The font that will be used to draw the status bar.

Type: Concatenated string

Default: "sans bold 9"

Example: "Droid Sans, FontAwesome Bold 9"

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.indicators

Indicators that should be rendered by yabar.

Type: attribute set of submodules

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.indicators.<name>.align

Whether to align the indicator at the left or right of the bar.

Type: one of "left", "center", "right"

Default: "left"

Example: "right"

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.indicators.<name>.exec

The type of the indicator to be executed.

Type: Concatenated string

Example: "YABAR_DATE"

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.indicators.<name>.extra

An attribute set which contains further attributes of a indicator.

Type: attribute set of Concatenated string or signed integers

Default: { }

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.yabar.bars.<name>.position

The position where the bar will be rendered.

Type: one of "top", "bottom"

Default: "top"

Example: "bottom"

Declared by:

<nixpkgs/nixos/modules/programs/yabar.nix>
programs.zsh.enable

Whether to configure zsh as an interactive shell. To enable zsh for a particular user, use the users.users.<name?>.shell option for that user. To enable zsh system-wide use the users.defaultUserShell option.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.enableCompletion

Enable zsh completion for all interactive zsh shells.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.enableGlobalCompInit

Enable execution of compinit call for all interactive zsh shells.

This option can be disabled if the user wants to extend its fpath and a custom compinit call in the local config is required.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.autosuggestions.enable

Whether to enable zsh-autosuggestions.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autosuggestions.nix>
programs.zsh.autosuggestions.extraConfig

Attribute set with additional configuration values

Type: attribute set of strings

Default: { }

Example:

{
  "ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE" = "20";
}

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autosuggestions.nix>
programs.zsh.autosuggestions.highlightStyle

Highlight style for suggestions ({fore,back}ground color)

Type: string

Default: "fg=8"

Example: "fg=cyan"

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autosuggestions.nix>
programs.zsh.autosuggestions.strategy

Set ZSH_AUTOSUGGEST_STRATEGY to choose the strategy for generating suggestions. There are currently two to choose from:

* default: Chooses the most recent match. * match_prev_cmd: Chooses the most recent match whose preceding history item matches the most recently executed command (more info). Note that this strategy won't work as expected with ZSH options that don't preserve the history order such as HIST_IGNORE_ALL_DUPS or HIST_EXPIRE_DUPS_FIRST.

Type: one of "default", "match_prev_cmd"

Default: "default"

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autosuggestions.nix>
programs.zsh.interactiveShellInit

Shell script code called during interactive zsh shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.loginShellInit

Shell script code called during zsh login shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.ohMyZsh.enable

Enable oh-my-zsh.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.package

Package to install for `oh-my-zsh` usage.

Type: package

Default: "pkgs.oh-my-zsh"

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.cacheDir

Cache directory to be used by `oh-my-zsh`. Without this option it would default to the read-only nix store.

Type: string

Default: "\$HOME/.cache/oh-my-zsh"

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.custom

Path to a custom oh-my-zsh package to override config of oh-my-zsh. (Can't be used along with `customPkgs`).

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.customPkgs

List of custom packages that should be loaded into `oh-my-zsh`.

Type: list of packages

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.plugins

List of oh-my-zsh plugins

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.ohMyZsh.theme

Name of the theme to be used by oh-my-zsh.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/zsh/oh-my-zsh.nix>
programs.zsh.promptInit

Shell script code used to initialise the zsh prompt.

Type: strings concatenated with "\n"

Default:

''
if [ "$TERM" != dumb ]; then
    autoload -U promptinit && promptinit && prompt walters
fi
''

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.shellAliases

Set of aliases for zsh shell. Overrides the default value taken from environment.shellAliases. See environment.shellAliases for an option format description.

Type: attribute set

Default: { l = "ls -alh"; ll = "ls -l"; ls = "ls --color=tty"; }

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.shellInit

Shell script code called during zsh shell initialisation.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh.nix>
programs.zsh.syntaxHighlighting.enable

Whether to enable zsh-syntax-highlighting.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix>
programs.zsh.syntaxHighlighting.highlighters

Specifies the highlighters to be used by zsh-syntax-highlighting.

The following defined options can be found here: https://github.com/zsh-users/zsh-syntax-highlighting/blob/master/docs/highlighters.md

Type: list of one of "main", "brackets", "pattern", "cursor", "root", "line"s

Default: [ "main" ]

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix>
programs.zsh.syntaxHighlighting.patterns

Specifies custom patterns to be highlighted by zsh-syntax-highlighting.

Please refer to the docs for more information about the usage: https://github.com/zsh-users/zsh-syntax-highlighting/blob/master/docs/highlighters/pattern.md

Type: attribute set of Concatenated strings

Default: { }

Example:

{
  "rm -rf *" = "fg=white,bold,bg=red";
}

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix>
programs.zsh.zsh-autoenv.enable

Whether to enable zsh-autoenv.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autoenv.nix>
programs.zsh.zsh-autoenv.package

Package to install for `zsh-autoenv` usage.

Type: package

Default: "pkgs.zsh-autoenv"

Declared by:

<nixpkgs/nixos/modules/programs/zsh/zsh-autoenv.nix>
security.acme.certs

Attribute set of certificates to get signed and renewed.

Type: attribute set of submodules

Default: { }

Example:

{
  "example.com" = {
    webroot = "/var/www/challenges/";
    email = "foo@example.com";
    extraDomains = { "www.example.com" = null; "foo.example.com" = "/var/www/foo/"; };
  };
  "bar.example.com" = {
    webroot = "/var/www/challenges/";
    email = "bar@example.com";
  };
}

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.activationDelay

Systemd time span expression to delay copying new certificates to main state directory. See systemd.time(7).

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.allowKeysForGroup

Give read permissions to the specified group (security.acme.cert.<name>.group) to read SSL private certificates.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.domain

Domain to fetch certificate for (defaults to the entry name)

Type: string

Default: "‹name›"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.email

Contact email address for the CA to be able to reach you.

Type: null or string

Default: null

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.extraDomains

A list of extra domain names, which are included in the one certificate to be issued, with their own server roots if needed.

Type: attribute set of null or strings

Default: { }

Example:

{
  "example.org" = "/srv/http/nginx";
  "mydomain.org" = null;
}

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.group

Group running the ACME client.

Type: string

Default: "root"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.plugins

Plugins to enable. With default settings simp_le will store public certificate bundle in fullchain.pem, private key in key.pem and those two previous files combined in full.pem in its state directory.

Type: list of one of "cert.der", "cert.pem", "chain.pem", "external.sh", "fullchain.pem", "full.pem", "key.der", "key.pem", "account_key.json"s

Default: [ "fullchain.pem" "full.pem" "key.pem" "account_key.json" ]

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.postRun

Commands to run after new certificates go live. Typically the web server and other servers using certificates need to be reloaded.

Executed in the same directory with the new certificate.

Type: strings concatenated with "\n"

Default: ""

Example: "systemctl reload nginx.service"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.preDelay

Commands to run after certificates are re-issued but before they are activated. Typically the new certificate is published to DNS.

Executed in the same directory with the new certificate.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.user

User running the ACME client.

Type: string

Default: "root"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.certs.<name>.webroot

Where the webroot of the HTTP vhost is located. .well-known/acme-challenge/ directory will be created below the webroot if it doesn't exist. http://example.org/.well-known/acme-challenge/ must also be available (notice unencrypted HTTP).

Type: string

Example: "/var/lib/acme/acme-challenges"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.directory

Directory where certs and other state will be stored by default.

Type: string

Default: "/var/lib/acme"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.preliminarySelfsigned

Whether a preliminary self-signed certificate should be generated before doing ACME requests. This can be useful when certificates are required in a webserver, but ACME needs the webserver to make its requests.

With preliminary self-signed certificate the webserver can be started and can later reload the correct ACME certificates.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.production

If set to true, use Let's Encrypt's production environment instead of the staging environment. The main benefit of the staging environment is to get much higher rate limits.

See https://letsencrypt.org/docs/staging-environment for more detail.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.renewInterval

Systemd calendar expression when to check for renewal. See systemd.time(7).

Type: string

Default: "weekly"

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.acme.validMin

Minimum remaining validity before renewal in seconds.

Type: signed integer

Default: 2592000

Declared by:

<nixpkgs/nixos/modules/security/acme.nix>
security.apparmor.enable

Enable the AppArmor Mandatory Access Control system.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/apparmor.nix>
security.apparmor.packages

List of packages to be added to apparmor's include path

Type: list of packages

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/apparmor.nix>
security.apparmor.confineSUIDApplications

Install AppArmor profiles for commonly-used SUID application to mitigate potential privilege escalation attacks due to bugs in such applications.

Currently available profiles: ping

Type: unspecified

Default: true

Declared by:

<nixpkgs/nixos/modules/security/apparmor-suid.nix>
security.apparmor.profiles

List of files containing AppArmor profiles.

Type: list of paths

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/apparmor.nix>
security.audit.enable

Whether to enable the Linux audit system. The special `lock' value can be used to enable auditing and prevent disabling it until a restart. Be careful about locking this, as it will prevent you from changing your audit configuration until you restart. If possible, test your configuration using build-vm beforehand.

Type: one of <bool>, <bool>, "lock"

Default: false

Declared by:

<nixpkgs/nixos/modules/security/audit.nix>
security.audit.backlogLimit

The maximum number of outstanding audit buffers allowed; exceeding this is considered a failure and handled in a manner specified by failureMode.

Type: signed integer

Default: 64

Declared by:

<nixpkgs/nixos/modules/security/audit.nix>
security.audit.failureMode

How to handle critical errors in the auditing system

Type: one of "silent", "printk", "panic"

Default: "printk"

Declared by:

<nixpkgs/nixos/modules/security/audit.nix>
security.audit.rateLimit

The maximum messages per second permitted before triggering a failure as specified by failureMode. Setting it to zero disables the limit.

Type: signed integer

Default: 0

Declared by:

<nixpkgs/nixos/modules/security/audit.nix>
security.audit.rules

The ordered audit rules, with each string appearing as one line of the audit.rules file.

Type: list of strings

Default: [ ]

Example: [ "-a exit,always -F arch=b64 -S execve" ]

Declared by:

<nixpkgs/nixos/modules/security/audit.nix>
security.auditd.enable

Whether to enable the Linux Audit daemon.

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/security/auditd.nix>
security.chromiumSuidSandbox.enable

Whether to install the Chromium SUID sandbox which is an executable that Chromium may use in order to achieve sandboxing.

If you get the error "The SUID sandbox helper binary was found, but is not configured correctly.", turning this on might help.

Also, if the URL chrome://sandbox tells you that "You are not adequately sandboxed!", turning this on might resolve the issue.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/chromium-suid-sandbox.nix>
security.dhparams.enable

Whether to generate new DH params and clean up old DH params.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.defaultBitSize

This allows to override the default bit size for all of the Diffie-Hellman parameters set in security.dhparams.params.

Type: integer of at least 16 bits

Default: 2048

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.params

Diffie-Hellman parameters to generate.

The value is the size (in bits) of the DH params to generate. The generated DH params path can be found in config.security.dhparams.params.name.path.

Note: The name of the DH params is taken as being the name of the service it serves and the params will be generated before the said service is started.
Warning: If you are removing all dhparams from this list, you have to leave security.dhparams.enable for at least one activation in order to have them be cleaned up. This also means if you rollback to a version without any dhparams the existing ones won't be cleaned up. Of course this only applies if security.dhparams.stateful is true.
Note: It's recommended to not set a specific bit size here, so that users can easily override this by setting security.dhparams.defaultBitSize.

Type: attribute set of submodule or signed integer convertible to its

Default: { }

Example:

{ nginx.bits = 3072; }

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.params.<name>.bits

The bit size for the prime that is used during a Diffie-Hellman key exchange.

Type: integer of at least 16 bits

Default: 2048

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.params.<name>.path

The resulting path of the generated Diffie-Hellman parameters file for other services to reference. This could be either a store path or a file inside the directory specified by security.dhparams.path.

Type: path (read only)

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.path

Path to the directory in which Diffie-Hellman parameters will be stored. This only is relevant if security.dhparams.stateful is true.

Type: string

Default: "/var/lib/dhparams"

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.dhparams.stateful

Whether generation of Diffie-Hellman parameters should be stateful or not. If this is enabled, PEM-encoded files for Diffie-Hellman parameters are placed in the directory specified by security.dhparams.path. Otherwise the files are created within the Nix store.

Note: If this is false the resulting store path will be non-deterministic and will be rebuilt every time the openssl package changes.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/dhparams.nix>
security.duosec.acceptEnvFactor

Look for factor selection or passcode in the $DUO_PASSCODE environment variable before prompting the user for input.

When $DUO_PASSCODE is non-empty, it will override autopush. The SSH client will need SendEnv DUO_PASSCODE in its configuration, and the SSH server will similarly need AcceptEnv DUO_PASSCODE.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.allowTcpForwarding

By default, when SSH forwarding, enabling Duo Security will disable TCP forwarding. By enabling this, you potentially undermine some of the SSH based login security. Note this is not needed if you use PAM.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.autopush

If true, Duo Unix will automatically send a push login request to the user’s phone, falling back on a phone call if push is unavailable. If false, the user will be prompted to choose an authentication method. When configured with autopush = yes, we recommend setting prompts = 1.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.failmode

On service or configuration errors that prevent Duo authentication, fail "safe" (allow access) or "secure" (deny access). The default is "safe".

Type: one of "safe", "enum"

Default: "safe"

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.fallbackLocalIP

Duo Unix reports the IP address of the authorizing user, for the purposes of authorization and whitelisting. If Duo Unix cannot detect the IP address of the client, setting fallbackLocalIP = yes will cause Duo Unix to send the IP address of the server it is running on.

If you are using IP whitelisting, enabling this option could cause unauthorized logins if the local IP is listed in the whitelist.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.group

Use Duo authentication for users only in this group.

Type: string

Default: ""

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.host

Duo API hostname.

Type: string

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.ikey

Integration key.

Type: string

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.motd

Print the contents of /etc/motd to screen after a successful login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.pam.enable

If enabled, protect logins with Duo Security using PAM support.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.prompts

If a user fails to authenticate with a second factor, Duo Unix will prompt the user to authenticate again. This option sets the maximum number of prompts that Duo Unix will display before denying access. Must be 1, 2, or 3. Default is 3.

For example, when prompts = 1, the user will have to successfully authenticate on the first prompt, whereas if prompts = 2, if the user enters incorrect information at the initial prompt, he/she will be prompted to authenticate again.

When configured with autopush = true, we recommend setting prompts = 1.

Type: one of 1, 2, 3

Default: 3

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.pushinfo

Include information such as the command to be executed in the Duo Push message.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.skey

Secret key.

Type: string

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.duosec.ssh.enable

If enabled, protect SSH logins with Duo Security.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/duosec.nix>
security.hideProcessInformation

Restrict process information to the owning user.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/hidepid.nix>
security.lockKernelModules

Disable kernel module loading once the system is fully initialised. Module loading is disabled until the next reboot. Problems caused by delayed module loading can be fixed by adding the module(s) in question to boot.kernelModules.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/lock-kernel-modules.nix>
security.pam.enableEcryptfs

Enable eCryptfs PAM module (mounting ecryptfs home directory on login).

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.enableOTPW

Enable the OTPW (one-time password) PAM module.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.enableSSHAgentAuth

Enable sudo logins if the user's SSH agent provides a key present in ~/.ssh/authorized_keys. This allows machines to exclusively use SSH keys instead of passwords.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.enableU2F

Enable the U2F PAM module.

Type: unspecified

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.loginLimits

Define resource limits that should apply to users or groups. Each item in the list should be an attribute set with a domain, type, item, and value attribute. The syntax and semantics of these attributes must be that described in the limits.conf(5) man page.

Note that these limits do not apply to systemd services, whose limits can be changed via systemd.extraConfig instead.

Type: unspecified

Default: [ ]

Example: [ { domain = "ftp"; item = "nproc"; type = "hard"; value = "0"; } { domain = "@student"; item = "maxlogins"; type = "-"; value = "4"; } ]

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.makeHomeDir.skelDirectory

Path to skeleton directory whose contents are copied to home directories newly created by pam_mkhomedir.

Type: string

Default: "/var/empty"

Example: "/etc/skel"

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.mount.enable

Enable PAM mount system to mount fileystems on user login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam_mount.nix>
security.pam.mount.extraVolumes

List of volume definitions for pam_mount. For more information, visit http://pam-mount.sourceforge.net/pam_mount.conf.5.html.

Type: list of strings

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/pam_mount.nix>
security.pam.oath.enable

Enable the OATH (one-time password) PAM module.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/oath.nix>
security.pam.oath.digits

Specify the length of the one-time password in number of digits.

Type: one of 6, 7, 8

Default: 6

Declared by:

<nixpkgs/nixos/modules/security/oath.nix>
security.pam.oath.usersFile

Set the path to file where the user's credentials are stored. This file must not be world readable!

Type: path

Default: "/etc/users.oath"

Declared by:

<nixpkgs/nixos/modules/security/oath.nix>
security.pam.oath.window

Specify the number of one-time passwords to check in order to accommodate for situations where the system and the client are slightly out of sync (iteration for HOTP or time steps for TOTP).

Type: signed integer

Default: 5

Declared by:

<nixpkgs/nixos/modules/security/oath.nix>
security.pam.services

This option defines the PAM services. A service typically corresponds to a program that uses PAM, e.g. login or passwd. Each attribute of this set defines a PAM service, with the attribute name defining the name of the service.

Type: list or attribute set of submodules

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.enableAppArmor

Enable support for attaching AppArmor profiles at the user/group level, e.g., as part of a role based access control scheme.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.enableGnomeKeyring

If enabled, pam_gnome_keyring will attempt to automatically unlock the user's default Gnome keyring upon login. If the user login password does not match their keyring password, Gnome Keyring will prompt separately after login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.enableKwallet

If enabled, pam_wallet will attempt to automatically unlock the user's default KDE wallet upon login. If the user has no wallet named "kdewallet", or the login password does not match their wallet password, KDE will prompt separately after login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.allowNullPassword

Whether to allow logging into accounts that have no password set (i.e., have an empty password field in /etc/passwd or /etc/group). This does not enable logging into disabled accounts (i.e., that have the password field set to !). Note that regardless of what the pam_unix documentation says, accounts with hashed empty passwords are always allowed to log in.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.forwardXAuth

Whether X authentication keys should be passed from the calling user to the target user (e.g. for su)

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.fprintAuth

If set, fingerprint reader will be used (if exists and your fingerprints are enrolled).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.googleAuthenticator.enable

If set, users with enabled Google Authenticator (created ~/.google_authenticator) will be required to provide Google Authenticator token to log in.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.limits

Attribute set describing resource limits. Defaults to the value of security.pam.loginLimits.

Type: unspecified

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.logFailures

Whether to log authentication failures in /var/log/faillog.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.makeHomeDir

Whether to try to create home directories for users with $HOMEs pointing to nonexistent locations on session login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.name

Name of the PAM service.

Type: string

Example: "sshd"

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.oathAuth

If set, the OATH Toolkit will be used.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.otpwAuth

If set, the OTPW system will be used (if ~/.otpw exists).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.pamMount

Enable PAM mount (pam_mount) system to mount fileystems on user login.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.requireWheel

Whether to permit root access only to members of group wheel.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.rootOK

If set, root doesn't need to authenticate (e.g. for the useradd service).

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.setEnvironment

Whether the service should set the environment variables listed in environment.sessionVariables using pam_env.so.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.setLoginUid

Set the login uid of the process (/proc/self/loginuid) for auditing purposes. The login uid is only set by ‘entry points’ like login and sshd, not by commands like sudo.

Type: boolean

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.showMotd

Whether to show the message of the day.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.sshAgentAuth

If set, the calling user's SSH agent is used to authenticate against the keys in the calling user's ~/.ssh/authorized_keys. This is useful for sudo on password-less remote systems.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.sssdStrictAccess

enforce sssd access control

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.startSession

If set, the service will register a new session with systemd's login manager. For local sessions, this will give the user access to audio devices, CD-ROM drives. In the default PolicyKit configuration, it also allows the user to reboot the system.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.text

Contents of the PAM service file.

Type: null or strings concatenated with "\n"

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.u2fAuth

If set, users listed in ~/.config/Yubico/u2f_keys are able to log in with the associated U2F key.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.unixAuth

Whether users can log in with passwords defined in /etc/shadow.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.updateWtmp

Whether to update /var/log/wtmp.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.services.<name?>.usbAuth

If set, users listed in /etc/pamusb.conf are able to log in with the associated USB key.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam.nix>
security.pam.usb.enable

Enable USB login for all login systems that support it. For more information, visit https://github.com/aluzzardi/pam_usb/wiki/Getting-Started#setting-up-devices-and-users.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/pam_usb.nix>
security.pki.caCertificateBlacklist

A list of blacklisted CA certificate names that won't be imported from the Mozilla Trust Store into /etc/ssl/certs/ca-certificates.crt. Use the names from that file.

Type: list of strings

Default: [ ]

Example: [ "WoSign" "WoSign China" "CA WoSign ECC Root" "Certification Authority of WoSign G2" ]

Declared by:

<nixpkgs/nixos/modules/security/ca.nix>
security.pki.certificateFiles

A list of files containing trusted root certificates in PEM format. These are concatenated to form /etc/ssl/certs/ca-certificates.crt, which is used by many programs that use OpenSSL, such as curl and git.

Type: list of paths

Default: [ ]

Example:

[ "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt" ]

Declared by:

<nixpkgs/nixos/modules/security/ca.nix>
security.pki.certificates

A list of trusted root certificates in PEM format.

Type: list of strings

Default: [ ]

Example:

[ ''
    NixOS.org
    =========
    -----BEGIN CERTIFICATE-----
    MIIGUDCCBTigAwIBAgIDD8KWMA0GCSqGSIb3DQEBBQUAMIGMMQswCQYDVQQGEwJJ
    TDEWMBQGA1UEChMNU3RhcnRDb20gTHRkLjErMCkGA1UECxMiU2VjdXJlIERpZ2l0
    ...
    -----END CERTIFICATE-----
  ''
]

Declared by:

<nixpkgs/nixos/modules/security/ca.nix>
security.polkit.enable

Whether to enable PolKit.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/polkit.nix>
security.polkit.adminIdentities

Specifies which users are considered “administrators”, for those actions that require the user to authenticate as an administrator (i.e. have an auth_admin value). By default, this is the root user and all users in the wheel group.

Type: list of strings

Default: [ "unix-user:0" "unix-group:wheel" ]

Example: [ "unix-user:alice" "unix-group:admin" ]

Declared by:

<nixpkgs/nixos/modules/security/polkit.nix>
security.polkit.extraConfig

Any polkit rules to be added to config (in JavaScript ;-). See: http://www.freedesktop.org/software/polkit/docs/latest/polkit.8.html#polkit-rules

Type: strings concatenated with "\n"

Default: ""

Example:

''
/* Log authorization checks. */
polkit.addRule(function(action, subject) {
  polkit.log("user " +  subject.user + " is attempting action " + action.id + " from PID " + subject.pid);
});

/* Allow any local user to do anything (dangerous!). */
polkit.addRule(function(action, subject) {
  if (subject.local) return "yes";
});
''

Declared by:

<nixpkgs/nixos/modules/security/polkit.nix>
security.rngd.enable

Whether to enable the rng daemon, which adds entropy from hardware sources of randomness to the kernel entropy pool when available.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/rngd.nix>
security.rtkit.enable

Whether to enable the RealtimeKit system service, which hands out realtime scheduling priority to user processes on demand. For example, the PulseAudio server uses this to acquire realtime priority.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/security/rtkit.nix>
security.sudo.enable

Whether to enable the sudo command, which allows non-root users to execute commands as root.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.configFile

This string contains the contents of the sudoers file.

Type: strings concatenated with "\n"

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraConfig

Extra configuration text appended to sudoers.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules

Define specific rules to be in the sudoers file. More specific rules should come after more general ones in order to yield the expected behavior. You can use mkBefore/mkAfter to ensure this is the case when configuration options are merged.

Type: list of submodules

Default: [ ]

Example: [ { commands = [ "ALL" ] ; groups = [ "sudo" ] ; } { commands = [ { command = "/home/root/secret.sh"; options = [ "SETENV" "NOPASSWD" ] ; } ] ; groups = [ 1006 ] ; users = [ "backup" "database" ] ; } { commands = [ "/home/baz/cmd1.sh hello-sudo" { command = ''/home/baz/cmd2.sh ""''; options = [ "SETENV" ] ; } ] ; groups = [ "bar" ] ; runAs = "foo"; } ]

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules.*.commands

The commands for which the rule should apply.

Type: list of Concatenated string or submodules

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules.*.groups

The groups / GIDs this rule should apply for.

Type: list of Concatenated string or signed integers

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules.*.host

For what host this rule should apply.

Type: Concatenated string

Default: "ALL"

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules.*.runAs

Under which user/group the specified command is allowed to run.

A user can be specified using just the username: "foo". It is also possible to specify a user/group combination using "foo:bar" or to only allow running as a specific group with ":bar".

Type: Concatenated string

Default: "ALL:ALL"

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.extraRules.*.users

The usernames / UIDs this rule should apply for.

Type: list of Concatenated string or signed integers

Default: [ ]

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.sudo.wheelNeedsPassword

Whether users of the wheel group must provide a password to run commands as super user via sudo.

Type: boolean

Default: true

Declared by:

<nixpkgs/nixos/modules/security/sudo.nix>
security.wrappers

This option allows the ownership and permissions on the setuid wrappers for specific programs to be overridden from the default (setuid root, but not setgid root).

Note

The sub-attribute source is mandatory, it must be the absolute path to the program to be wrapped.

The sub-attribute program is optional and can give the wrapper program a new name. The default name is the same as the attribute name itself.

Additionally, this option can set capabilities on a wrapper program that propagates those capabilities down to the wrapped, real program.

NOTE: cap_setpcap, which is required for the wrapper program to be able to raise caps into the Ambient set is NOT raised to the Ambient set so that the real program cannot modify its own capabilities!! This may be too restrictive for cases in which the real program needs cap_setpcap but it at least leans on the side security paranoid vs. too relaxed.

Type: attribute set

Default: { }

Example:

{ sendmail.source = "/nix/store/.../bin/sendmail";
  ping = {
    source  = "${pkgs.iputils.out}/bin/ping";
    owner   = "nobody";
    group   = "nogroup";
    capabilities = "cap_net_raw+ep";
  };
}

Declared by:

<nixpkgs/nixos/modules/security/wrappers/default.nix>
services.packagekit.enable

Whether to enable PackageKit provides a cross-platform D-Bus abstraction layer for installing software. Software utilizing PackageKit can install software regardless of the package manager. .

Type: boolean

Default: false

Example: true

Declared by:

<nixpkgs/nixos/modules/services/misc/packagekit.nix>
services.SystemdJournal2Gelf.enable

Whether to enable SystemdJournal2Gelf.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/logging/SystemdJournal2Gelf.nix>
services.SystemdJournal2Gelf.package

SystemdJournal2Gelf package to use.

Type: package

Default: (build of SystemdJournal2Gelf-20170413)

Declared by:

<nixpkgs/nixos/modules/services/logging/SystemdJournal2Gelf.nix>
services.SystemdJournal2Gelf.extraOptions

Any extra flags to pass to SystemdJournal2Gelf. Note that these are basically journalctl flags.

Type: Concatenated string

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/logging/SystemdJournal2Gelf.nix>
services.SystemdJournal2Gelf.graylogServer

Host and port of your graylog2 input. This should be a GELF UDP input.

Type: Concatenated string

Example: "graylog2.example.com:11201"

Declared by:

<nixpkgs/nixos/modules/services/logging/SystemdJournal2Gelf.nix>
services.accounts-daemon.enable

Whether to enable AccountsService, a DBus service for accessing the list of user accounts and information attached to those accounts.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/desktops/accountsservice.nix>
services.acpid.enable

Whether to enable the ACPI daemon.

Type: boolean

Default: false

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.acEventCommands

Shell commands to execute on an ac_adapter.* event.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.handlers

Event handlers.

Note: Handler can be a single command.

Type: attribute set of submodules

Default: { }

Example: { ac-power = { action = "vals=(\$1) # space separated string to array of multiple values\ncase \${vals[3]} in\n 00000000)\n echo unplugged >> /tmp/acpi.log\n ;;\n 00000001)\n echo plugged in >> /tmp/acpi.log\n ;;\n *)\n echo unknown >> /tmp/acpi.log\n ;;\nesac\n"; event = "ac_adapter/*"; } ; }

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.handlers.<name>.action

Shell commands to execute when the event is triggered.

Type: strings concatenated with "\n"

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.handlers.<name>.event

Event type.

Type: string

Example: [ "button/power.*" "button/lid.*" "ac_adapter.*" "button/mute.*" "button/volumedown.*" "cd/play.*" "cd/next.*" ]

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.lidEventCommands

Shell commands to execute on a button/lid.* event.

Type: strings concatenated with "\n"

Default: ""

Declared by:

<nixpkgs/nixos/modules/services/hardware/acpid.nix>
services.acpid.logEvents

Log all event activity.

Type: boolean

Default: false

Declared by: