This commit was created by a combination of scripts and tools:
- an ast-grep script to prefix things in meta with `lib.`,
- a modified nixf-diagnose / nixf combination to remove unused `with
lib;`, and
- regular nixfmt.
Co-authored-by: Wolfgang Walther <walther@technowledgy.de>
This treewide conditions execution of the built applications for the purpose of generating shell completions behind `stdenv.buildPlatform.canExecute stdenv.hostPlatform`, which helps cross. This is a common issue I spot during review, let's prevent copy-paste errors by fixing it treewide.
Candidates were located with:
```shell
rg 'installShellCompletion' -l -tnix | xargs grep -F 'stdenv.buildPlatform.canExecute stdenv.hostPlatform' -L
```
Then I migrated the obvious cases which would not require a rebuild, as a means of testing.
This diff was not scripted. Should be zero rebuilds.
<details>
<summary>
Alternatives
</summary>
Alternatively I could have use this pattern:
```nix
postInstall = lib.optionalString (stdenv.hostPlatform.emulatorAvailable buildPackages) (
let
emulator = stdenv.hostPlatform.emulator buildPackages;
in
''
installShellCompletion --cmd foobar \
--bash <(${emulator} $out/bin/foobar completion bash) \
--fish <(${emulator} $out/bin/foobar completion fish) \
--zsh <(${emulator} $out/bin/foobar completion zsh)
''
);
```
but that would cause rebuilds and will also require testing.
---
An other alternative is to use the binary from the corresponding package in `buildPackages`.
This however would also cause rebuilds and will also require testing.
</details>
Format all Nix files using the officially approved formatter,
making the CI check introduced in the previous commit succeed:
nix-build ci -A fmt.check
This is the next step of the of the [implementation](https://github.com/NixOS/nixfmt/issues/153)
of the accepted [RFC 166](https://github.com/NixOS/rfcs/pull/166).
This commit will lead to merge conflicts for a number of PRs,
up to an estimated ~1100 (~33%) among the PRs with activity in the past 2
months, but that should be lower than what it would be without the previous
[partial treewide format](https://github.com/NixOS/nixpkgs/pull/322537).
Merge conflicts caused by this commit can now automatically be resolved while rebasing using the
[auto-rebase script](8616af08d9/maintainers/scripts/auto-rebase).
If you run into any problems regarding any of this, please reach out to the
[formatting team](https://nixos.org/community/teams/formatting/) by
pinging @NixOS/nix-formatting.
The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.
