Multi-user installation (recommended)

Install Nix via the recommended multi-user installation:

$ sh <(curl -L https://nixos.org/nix/install) --daemon

We recommend the multi-user install if you are on Linux running systemd, with SELinux disabled and you can authenticate with sudo.

Single-user installation

Install Nix via the single-user installation:

$ sh <(curl -L https://nixos.org/nix/install) --no-daemon

Above command will perform a single-user installation of Nix, meaning that nix is owned by the invoking user. You should run this under your usual user account, not as root. The script will invoke sudo to create /nix if it doesn’t already exist.

Which type of installation should you choose?

This depends on your requirements, but here is a short list of reasons why we recommend multi-user installation:

Pros

• Better build isolation (and that is what Nix is all about)
• Better security (a build can not write somewhere in your home)
• Sharing builds between users

Cons

• Requires root to run the daemon
• More involved installation (creation of nixbld* users, installing a systemd unit, …
• Harder to uninstall

Multi-user installation

Updating to macOS 15 Sequoia

If you recently updated to macOS 15 Sequoia and are getting

error: the user '_nixbld1' in the group 'nixbld' does not exist

when running Nix commands, refer to GitHub issue NixOS/nix#10892 for instructions to fix your installation without reinstalling.

Install Nix via the recommended multi-user installation:

$ sh <(curl -L https://nixos.org/nix/install)

We believe we have ironed out how to cleanly support the read-only root on modern macOS. Please consult the manual on details what the installation script does.

Multi-user installation (Requires WSL with systemd enabled)

WSL versions 0.67.6 and above has systemd support. Follow Microsoft’s systemd guide to configure it, and then install Nix using:

$ sh <(curl -L https://nixos.org/nix/install) --daemon

Single-user installation

Install Nix via the single-user installation

$ sh <(curl -L https://nixos.org/nix/install) --no-daemon

Start a Docker shell with Nix:

$ docker run -it nixos/nix

Or start a Docker shell with Nix exposing a workdir directory:

$ mkdir workdir
$ docker run -it -v $(pwd)/workdir:/workdir nixos/nix

The workdir example from above can be also used to start hacking on nixpkgs:

$ git clone --depth=1 https://github.com/NixOS/nixpkgs.git
$ docker run -it -v $(pwd)/nixpkgs:/nixpkgs nixos/nix
docker> nix-build -I nixpkgs=/nixpkgs -A hello
docker> find ./result # this symlink points to the build package

The following release items are also available:

• Release notes
• Manual. Please read the “Quick Start” section of the manual for an overview of how to install and use Nix.
• Old releases are also available.

You can install NixOS on physical hardware by burning one of the CD images onto a blank CD/DVD disk, or by copying it onto a USB stick. For installation instructions, please see the manual.

Graphical ISO image

The graphical installation ISO image contains the graphical NixOS installer as well as a Desktop Environment and several applications. It’s a live CD, so it allows you to get an impression of NixOS (and the Nix package manager) without installing it.

Note that while the image itself only comes in GNOME and Plasma variations, the included installer also allows installing various other desktops, or installing without a desktop.

Minimal ISO image

The minimal installation ISO image does not contain the graphical user interface, and is therefore a lot smaller. You have to run the installer from the console. It contains a number of rescue tools.

VirtualBox image includes the Plasma Desktop (was KDE) as well as the VirtualBox guest additions.

To use it

• Download the OVA file using the button above.
• Open VirtualBox.
• Run File → Import Appliance from the menu.
• Select previously downloaded OVA file.
• Click Import.
• You can then start the virtual machine.
• You can log in as user demo, password demo.
• To obtain a root shell, run sudo -i in the terminal (konsole).

NixOS AMIs

NixOS can be deployed to Amazon EC2 using our official AMI. We publish AMIs to all AWS regions for both x86_64 and arm64 on a weekly basis.

We will start deprecating and garbage collecting images older than 90 days in the future. This is why we suggest using a terraform data source or the AWS API to query for the latest AMI.

Via Terraform / OpenTofu

You can easily query for the latest AMI using a data source:

provider "aws" {
  region = "eu-central-1"
}

data "aws_ami" "nixos_arm64" {
  owners      = ["427812963091"]
  most_recent = true

  filter {
    name   = "name"
    values = ["nixos/24.05*"]
  }
  filter {
    name   = "architecture"
    values = ["arm64"] # or "x86_64"
  }
}

resource "aws_instance" "nixos_arm64" {
  ami           = data.aws_ami.nixos_arm64.id
  instance_type = "t4g.nano"
}

Via Command Line / AWS API

The DescribeImages API can be used to query the latest AMI too:

aws ec2 describe-images --owners 427812963091  --filter 'Name=name,Values=nixos/24.05*' 'Name=architecture,Values=arm64' --query 'sort_by(Images, &CreationDate)'

Search for specific AMIs

You can also use the Image searcher to find a specific AMI. Do note that we intend to deprecate images older than 90 days automatically and we do not recommend hardcoding AMI ids.

The following release items are also available:

• Release notes

• Manual.

• Old releases are also available.