d7ef2defda
As a follow-up to https://github.com/NixOS/nixpkgs/pull/294096 this should further improve the flexibility around building OS images with systemd-repart: * Previously the attribute set `compression` needed to be fully populated, including `algorithm` and `level` because `compression.enable` was evaluated by bash, after being interpolated as strings into the `buildCommand`. Now it's sufficient to pass `compression.enable = false` to the builder, e.g. in `overrideAttrs`, to disable the compression. * Using mkDerivation allows for much more customization than the previously used `runCommand`, making use of phases and pre/post hooks. This is especially helpful for building multiple images from the same system configuration, e.g. to build an image `Y` based on a partially built raw image `X`, by injecting a UKI that depends on `X` into a defered ESP. * Before this change it was non-trivial to conduct further manipulations on the amended repart definitions. Now, the definitions that systemd-repart uses to build the image can be easily manipulated in `postPatch` or `preBuild`. Aside from this, the build is now executed in the build directory, rather than `$out`. This allows references to relative paths in the build environment to be used, especially for `--definitions`, which previously required an absolute path. |
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| .. | ||
| doc/manual | ||
| lib | ||
| maintainers | ||
| modules | ||
| tests | ||
| COPYING | ||
| default.nix | ||
| README.md | ||
| release-combined.nix | ||
| release-small.nix | ||
| release.nix | ||
NixOS
NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.
Testing changes
You can add new module to your NixOS configuration file (usually it’s /etc/nixos/configuration.nix). And do sudo nixos-rebuild test -I nixpkgs=<path to your local nixpkgs folder> --fast.
Commit conventions
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Make sure you read about the commit conventions common to Nixpkgs as a whole.
-
Format the commit messages in the following way:
nixos/(module): (init module | add setting | refactor | etc) (Motivation for change. Link to release notes. Additional information.)Examples:
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nixos/hydra: add bazBaz option
Dual baz behavior is needed to do foo.
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nixos/nginx: refactor config generation
The old config generation system used impure shell scripts and could break in specific circumstances (see #1234).
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Reviewing contributions
When changing the bootloader installation process, extra care must be taken. Grub installations cannot be rolled back, hence changes may break people’s installations forever. For any non-trivial change to the bootloader please file a PR asking for review, especially from @edolstra.
Module updates
Module updates are submissions changing modules in some ways. These often contains changes to the options or introduce new options.
Reviewing process:
- Ensure that the module maintainers are notified.
- CODEOWNERS will make GitHub notify users based on the submitted changes, but it can happen that it misses some of the package maintainers.
- Ensure that the module tests, if any, are succeeding.
- You may invoke OfBorg with
@ofborg test <module>to buildnixosTests.<module>
- You may invoke OfBorg with
- Ensure that the introduced options are correct.
- Type should be appropriate (string related types differs in their merging capabilities,
loaOfandstringtypes are deprecated). - Description, default and example should be provided.
- Type should be appropriate (string related types differs in their merging capabilities,
- Ensure that option changes are backward compatible.
mkRenamedOptionModuleWithprovides a way to make renamed option backward compatible.- Use
lib.versionAtLeast config.system.stateVersion "23.11"on backward incompatible changes which may corrupt, change or update the state stored on existing setups.
- Ensure that removed options are declared with
mkRemovedOptionModule. - Ensure that changes that are not backward compatible are mentioned in release notes.
- Ensure that documentations affected by the change is updated.
Sample template for a module update review is provided below.
##### Reviewed points
- [ ] changes are backward compatible
- [ ] removed options are declared with `mkRemovedOptionModule`
- [ ] changes that are not backward compatible are documented in release notes
- [ ] module tests succeed on ARCHITECTURE
- [ ] options types are appropriate
- [ ] options description is set
- [ ] options example is provided
- [ ] documentation affected by the changes is updated
##### Possible improvements
##### Comments
New modules
New modules submissions introduce a new module to NixOS.
Reviewing process:
- Ensure that all file paths fit the guidelines.
- Ensure that the module tests, if any, are succeeding.
- Ensure that the introduced options are correct.
- Type should be appropriate (string related types differs in their merging capabilities,
loaOfandstringtypes are deprecated). - Description, default and example should be provided.
- Type should be appropriate (string related types differs in their merging capabilities,
- Ensure that module
metafield is present- Maintainers should be declared in
meta.maintainers. - Module documentation should be declared with
meta.doc.
- Maintainers should be declared in
- Ensure that the module respect other modules functionality.
- For example, enabling a module should not open firewall ports by default.
Sample template for a new module review is provided below.
##### Reviewed points
- [ ] module path fits the guidelines
- [ ] module tests succeed on ARCHITECTURE
- [ ] options have appropriate types
- [ ] options have default
- [ ] options have example
- [ ] options have descriptions
- [ ] No unneeded package is added to `environment.systemPackages`
- [ ] `meta.maintainers` is set
- [ ] module documentation is declared in `meta.doc`
##### Possible improvements
##### Comments