Appendix A. Release Notes

This release of Nixpkgs requires macOS Big Sur 11.3 or newer, as announced in the 24.11 release notes. We cannot guarantee that packages will continue to work on older versions of macOS. Future Nixpkgs releases will only support macOS versions supported by Apple; this means that Nixpkgs 25.11 will require macOS Sonoma 14 or newer. Users on old macOS versions should consider upgrading to a supported version (potentially using OpenCore Legacy Patcher for old hardware) or installing NixOS. If neither of those options are viable and you require new versions of software, MacPorts supports versions back to Mac OS X Snow Leopard 10.6.

The default kernel package has been updated from 6.6 to 6.12. All supported kernels remain available.

GCC has been updated from GCC 13 to GCC 14. This introduces some backwards‐incompatible changes; see the upstream porting guide for details.

LLVM has been updated from LLVM 16 (on Darwin) and LLVM 18 (on other platforms) to LLVM 19. This introduces some backwards‐incompatible changes; see the upstream release notes for details.

The Factor programming language packages were reworked. factor-lang-scope is now named factorPackages and provides a buildFactorApplication function to deploy Factor programs as binaries. It has also received proper documentation in the Nixpkgs manual.

Emacs has been updated to 30.1. This introduces some backwards‐incompatible changes; see the NEWS for details. NEWS can been viewed from Emacs by typing C-h n, or by clicking Help->Emacs News from the menu bar. It can also be browsed online.

The default openexr version has been updated to 3.2.4.

The default PHP version has been updated to 8.4.

The default Erlang OTP version has been updated to 27.

The default Elixir version has been updated to 1.18.

buildPythonPackage, buildPythonApplication and the Python building setup hooks now support both __structuredAttrs = true and __structuredAttrs = false.

apptainer and singularity deprecate the workaround of overriding vendorHash and related attributes via <pkg>.override, in favour of the unified overriding of the same group of attributes via <pkg>.overrideAttrs. The compatibility layer will be removed in future releases.

squid has been updated to version 7, this release includes multiple breaking changes, like ESI removal. For more information, check the release notes.

The no-broken-symlinks hook was added to catch builds containing dangling or reflexive symlinks, as these are indicative of problems with packaging. The hook can be disabled by providing dontCheckForBrokenSymlinks = true; as an argument to mkDerivation. For more information, check the docs or see this PR.

The hand written perlPackages.SearchXapian bindings have been dropped in favor of the (mostly compatible) perlPackages.Xapian.

The electron packages will now provide their headers (available via electron.headers) in extracted form instead of in a tarball.

The ephemeral package was removed due to upstream archival in early 2022.

testers.shellcheck now warns when name is not provided. The name argument will become mandatory in a future release.

grafana-agent and services.grafana-agent have been removed in favor of Grafana Alloy (grafana-alloy and services.alloy), as they depend on an EOL compiler version and will become EOL during the 25.05 lifecycle. Grafana recommends migrating to grafana-alloy (services.alloy). See https://grafana.com/docs/alloy/latest/set-up/migrate/ for details.

xdragon package has been renamed to dragon-drop. xdragon is an alias to dragon-drop and the package still provides bin/xdragon. bin/dragon is no longer supplied.

The nixLog* family of functions made available through the standard environment have been rewritten to prefix messages with both the debug level and the function name of the caller. The nixLog function, which logs unconditionally, was also re-introduced and modified to prefix messages with the function name of the caller. For more information, see this PR.

Rust packages will need to regenerate their cargoHash. Cargo 1.84.0 changed the format of cargo vendor output, which invalidated all existing rustPlatform.fetchCargoTarball hashes. To preserve Nix’s invariants, it has been replaced with rustPlatform.fetchCargoVendor, an independent implementation prioritizing format stability. rustPlatform.buildRustPackage now uses rustPlatform.fetchCargoVendor by default; a hash mismatch error is expected in third‐party Rust packages when updating to Nixpkgs 25.05. Packages wishing to maintain compatibility with Nixpkgs 24.11 must set useFetchCargoVendor to true explicitly. rustPlatform.importCargoLock may also be appropriate in some circumstances.

NetBox was updated to >= 4.2.0. Have a look at the breaking changes of the 4.1 release and the 4.2 release, make the required changes to your database, if needed, then upgrade by setting services.netbox.package = pkgs.netbox_4_2; in your configuration.

NetBox version 4.0.X available as netbox_4_0 was removed. Please upgrade to 4.2.

golangci-lint has reached v2. Please read the changes and view the migration guide here.

i3status-rust-package no longer enables notmuch by default. It can be enabled via withNotmuch.

ocis-bin has been renamed to ocis_5-bin. Future versions will have the major version suffix.

Default ICU version updated from 74 to 76

Apache Kafka was updated to >= 4.0.0. Please note that this is the first release which operates entirely without Apache ZooKeeper support, and all clusters need to be migrated to KRaft mode. See the release announcement for more details.

ast-grep remove sg command to prevent conflict with sg command from shadow-utils. If you need legacy sg command compatibility with old code, you can use ast-grep.override { enableLegacySg = true; }

rename package wtf to wtfutil.

python3Packages.beancount was updated to 3.1.0. Previous major version remains available as python3Packages.beancount_2.

wastebin has been updated to 3.0.0. See the Changelog for breaking changes to the configuration.

binwalk was updated to 3.1.0, which has been rewritten in rust. The python module is no longer available. See the release notes of 3.1.0 for more information.

pkgs.nextcloud28 has been removed since it’s out of support upstream.

centrifugo was updated to v6, which uses a new config format. See upstream documentation for migration.

teleport has been upgraded from major version 16 to major version 17. Refer to upstream upgrade instructions and release notes for v17.

Emacs lisp build helpers, such as emacs.pkgs.melpaBuild, now enables __structuredAttrs by default. Environment variables have to be passed via the env attribute.

buildGoModule now passes environment variables via the env attribute. CGO_ENABLED should now be specified with env.CGO_ENABLED when passing to buildGoModule. Direct specification of CGO_ENABLED is now redirected by a compatibility layer with a warning, but will become an error in future releases.

Go-related environment variables previously shadowed by buildGoModule now results in errors when specified directly. Such variables include GOOS and GOARCH.

Third-party projects supporting both stable and unstable channels could detect this change through the absence of the CGO_ENABLED function argument in buildGoModule (!((lib.functionArgs buildGoModule) ? CGO_ENABLED)).

buildGoPackage has been removed. Use buildGoModule instead. See the Go section in the nixpkgs manual for details.

top-level playwright now refers to the github Microsoft/playwright package instead of the python tester launcher. You can still refer to the python launcher via python3Packages.toPythonApplication python3Packages.playwright

The representation of the flags attributes as shell/environment variables for most Python building setup hooks are now the same as stdenv.mkDerivation and other build helpers – they are space-separated environment variables when __structuredAttrs = false and Bash arrays when __structuredAttrs = true, and are concatenated to the command without Bash-evaluation. The following behaviour changes are introduced during the conversion:

The haka package and module has been removed because the package was broken and unmaintained for 9 years.

strawberry has been updated to 1.2, which drops support for the VLC backend and Qt 5. The strawberry-qt5 package and withGstreamer/withVlc override options have been removed due to this.

nezha and its agent nezha-agent have been updated to v1, which contains breaking changes. See the official wiki for more details.

ps3-disc-dumper was updated to 4.2.5, which removed the CLI project and now exclusively offers the GUI

kmonad is now hardened by default using common systemd settings. If KMonad is used to execute shell commands, hardening may make some of them fail. In that case, you can disable hardening using services.kmonad.keyboards.<name>.enableHardening option.

isd was updated from 0.2.0 to 0.5.1, the new version may crash with a previously generated config, try moving or deleting ~/.config/isd/schema.json.

uwsgi no longer supports Python 2 plugins.

Support for CUDA 10 has been dropped, as announced in the 24.11 release notes.

mepo was updated to version 1.3.3. The manual page was removed, a new JSON API was introduced to replace Mepolang for configuration, and a few default key bindings were changed. See the 1.3.0 changelog for more details.

mkBinaryCache now defaults to using zstd compression for the binary caches it creates. The previous xz compression method can be used by passing compression = "xz";.

nodePackages."@commitlint/config-conventional" has been removed, as it is a library, and projects should depend on it instead.

zigbee2mqtt is now available in version 2.x as zigbee2mqtt_2. In NixOS 25.11 we’ll remove zigbee2mqtt_1 and default to zigbee2mqtt_2. See the breaking changes announcement for 2.0.0.

nodePackages.vls has been deprecated, as the upstream consumer of it, vetur, has been deprecated by upstream. Upstream suggests migrating to Volar for Vue LSP tooling instead.

nodePackages.create-react-native-app has been removed, as it is deprecated. Upstream suggests using a framework for React Native apps instead.

nodePackages.insect has been removed, as it’s deprecated by upstream. The suggested replacement is numbat.

nodePackages.webpack-dev-server has been removed, as it should be installed in projects that use it instead.

nodePackages.copy-webpack-plugin has been removed, as it should be installed in projects that use it instead.

himalaya has been updated from v1.0.0-beta.4 to v1.1.0, which introduces breaking changes. Check out the release notes for details.

linuxPackages.nvidiaPackages.dc_520 has been removed since it is marked broken and there are better newer alternatives.

pnpm was updated to version 10. If your project is incompatible, you can install the previous version from the package attribute pnpm_9.

zig_0_9 and zig_0_10 have been removed, you should upgrade to zig_0_13 (also available as just zig), zig_0_12 or zig_0_11 instead.

webpack-cli was updated to major version 6, which has breaking changes from the previous version 5.1.4. See the upstream release notes for details on these changes.

minetest has been renamed to luanti to match the upstream name change but aliases have been added. The new name hasn’t resulted in many changes as of yet but older references to minetest should be sunset. See the new name announcement for more details.

poac has been renamed to cabinpkg to match the upstream name change but an alias has been added. See the new name announcement for more details.

serious-sans has been removed because upstream changed its name to Serious Shanns, which is not currently packaged.

racket_7_9 has been removed, as it is insecure. It is recommended to use Racket 8 instead.

rofi has been updated from 1.7.5 to 1.7.6 which introduces some breaking changes to binary plugins, and also contains a lot of new features and bug fixes. This is highlighted because the patch version bump does not indicate the volume of changes by itself. See the upstream release notes for the full list of changes.

ente-auth now uses the name enteauth for its binary. The previous name was ente_auth.

foundationdb was upgraded to 7.3.

fluxus has been removed, as it depends on racket_7_9 and had no updates in 9 years.

sm64ex-coop has been removed as it was archived upstream. Consider migrating to sm64coopdx.

tldr now uses tldr-python-client instead of tldr-c-client which is unmaintained.

renovate was updated to v39. See the upstream release notes for breaking changes. Like upstream’s docker images, renovate now runs on NodeJS 22.

The behavior of the networking.nat.externalIP and networking.nat.externalIPv6 options has been changed. networking.nat.forwardPorts now only forwards packets destined for the specified IP addresses.

python3Packages.bpycv has been removed due to being incompatible with Blender 4 and unmaintained.

python3Packages.jaeger-client was removed because it was deprecated upstream. OpenTelemetry is the recommended replacement.

nodePackages.meshcommander has been removed, as the package was deprecated by Intel.

The default version of z3 has been updated from 4.8 to 4.13. There are still a few packages that need specific older versions; those will continue to be maintained as long as other packages depend on them but may be removed in the future.

prometheus has been updated from 2.55.0 to 3.1.0. Read the release blog post and migration guide.

kanata was updated to v1.8.0, which introduces several breaking changes. See the release notes of v1.7.0 and v1.8.0 for more information.

authelia version 4.39.0 has made changes on the default claims for ID Tokens, to mirror the standard claims from the specification. This change may affect some clients in unexpected ways, so manual intervention may be required. Read the release notes, along with the guide to work around issues that may be encountered.

ags was updated to v2, which is just a CLI for Astal now. Components are available as a different package set astal.*. If you want to use v1, it is available as ags_1 package.

See the release notes of v2.0.0 for more information.

nodePackages.expo-cli has been removed, as it was deprecated by upstream. The suggested replacement is the npx expo command.

open-policy-agent has has been updated to 1.0.0+. This major release makes the rego.v1 syntax the default. This is a breaking change for those using v0 Rego. See the upgrade documentation for more details. For those unable to upgrade yet, there is a v0 compatibility mode available too.

vscode-utils.buildVscodeExtension now requires pname as an argument

nerdfonts has been separated into individual font packages under the namespace nerd-fonts. The directories for font files have changed from $out/share/fonts/{opentype,truetype}/NerdFonts to $out/share/fonts/{opentype,truetype}/NerdFonts/<fontDirName>, where <fontDirName> can be found in the official website as the titles in preview images, with the “Nerd Font” suffix and any whitespaces trimmed. Configuration changes are required, see build output.

retroarch has been refactored and the older retroarch.override { cores = [ ... ]; } to create a RetroArch derivation with custom cores doesn’t work anymore, use retroarch.withCores (cores: [ ... ]) instead. If you need more customization (e.g.: custom settings), use wrapRetroArch instead.

borgmatic has been updated from 1.8.14 to 1.9.5, please check the upstream changelog for more details, especially for a few possibly breaking changes noted in the 1.9.0 changelog.

nodePackages.ganache has been removed, as the package has been deprecated by upstream.

matomo now defaults to version 5 (previously available as matomo_5). Version 4 has been removed as it reached EOL on December 19, 2024.

matomo-beta has been removed as the version of the matomo package can now be easily overridden through overrideAttrs (see PR #374022)

docker_24 has been removed, as it was EOL with vulnerabilities since June 08, 2024.

Emacs 28 and 29 have been removed.

Emacs 28 Macport has been removed, while CVEs of Emacs 29 Macport are patched.

containerd has been updated to v2, which contains breaking changes. See the containerd 2.0 documentation for more details.

nodePackages.stackdriver-statsd-backend has been removed, as the StackDriver service has been discontinued by Google, and therefore the package no longer works.

python3Packages.opentracing has been removed due to being unmaintained upstream. OpenTelemetry is the recommended replacement.

the notmuch vim plugin now lives in a separate output of the notmuch package. Installing notmuch will not bring the notmuch vim package anymore, add vimPlugins.notmuch-vim to your (Neo)vim configuration if you want the vim plugin.

prisma and prisma-engines have been updated to version 6.3.0, which introduces several breaking changes. See the Prisma ORM upgrade guide for more information.

depdendency-track no longer bundes the UI inside the jar. This bundling functionality is deprecated by upstream and causes UI assets not being served after weeks of runtime.

nq was updated to 1.0, which renames the fq and tq utilities to nqtail and nqterm respectively.

zf was updated to 0.10.2, which includes breaking changes from the 0.10.0 release. zf no longer does Unicode normalization of the input and no longer supports terminal escape sequences in the ZF_PROMPT environment variable.

confluent-cli was updated from 3.60.0 to 4.16.0, which includes several breaking changes as detailed in Confluent’s release notes.

siduck76-st has been renamed to st-snazzy, like the project’s flake.

python3Packages.jax now directly depends on python3Packages.jaxlib. As a result, packages that depend on jax no longer need to include jaxlib to their dependencies. There is also a breaking change in the handling of CUDA. Instead of using a CUDA compatible jaxlib as before, you can use plugins like python3Packages.jax-cuda12-plugin.

titaniumenv, titanium, and titanium-alloy have been removed due to lack of maintenance in Nixpkgs .

gerbera now has wavpack support.

GOverlay has been updated to 1.2, please check the upstream changelog for more details.

For matrix homeserver Synapse we are now following the upstream recommendation to enable jemalloc as the memory allocator by default.

In dovecot package removed hard coding path to module directory.

ddclient was updated from 3.11.2 to 4.0.0 Release notes