mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-28 08:33:54 +00:00
4f0dadbf38
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.
Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.
A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.
This commit was automatically created and can be verified using
nix-build a08b3a4d19.tar.gz \
--argstr baseRev b32a094368
result/bin/apply-formatting $NIXPKGS_PATH
108 lines
3.7 KiB
Nix
108 lines
3.7 KiB
Nix
{
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lib,
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buildPackages,
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config,
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}:
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let
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# rudimentary support for cross-compiling
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# see: https://github.com/NixOS/nixpkgs/pull/279487#discussion_r1444449726
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inherit (buildPackages)
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mktemp
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rsync
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;
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/*
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Build a derivation based on the checkpoint output generated by
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* the `prepareCheckpointBuild` function.
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*
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* Usage:
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* let
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* checkpointArtifacts = prepareCheckpointBuild drv;
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* in mkCheckpointBuild drv checkpointArtifacts
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*/
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mkCheckpointBuild =
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drv: checkpointArtifacts:
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drv.overrideAttrs (old: {
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# The actual checkpoint build phase.
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# We compare the changed sources from a previous build with the current and create a patch.
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# Afterwards we clean the build directory and copy the previous output files (including the sources).
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# The source difference patch is then applied to get the latest changes again to allow short build times.
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preBuild =
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(old.preBuild or "")
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+ ''
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set +e
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sourceDifferencePatchFile=$(${mktemp}/bin/mktemp)
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diff -ur ${checkpointArtifacts}/sources ./ > "$sourceDifferencePatchFile"
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set -e
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shopt -s dotglob
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rm -r *
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${rsync}/bin/rsync \
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--checksum --times --atimes --chown=$USER:$USER --chmod=+w \
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-r ${checkpointArtifacts}/outputs/ .
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patch -p 1 -i "$sourceDifferencePatchFile"
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rm "$sourceDifferencePatchFile"
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'';
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});
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in
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rec {
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inherit mkCheckpointBuild;
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/*
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Prepare a derivation for local builds.
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*
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* This function prepares checkpoint builds by storing
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* the build output and the sources for cross checking.
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* The build output can be used later to allow checkpoint builds
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* by passing the derivation output to the `mkCheckpointBuild` function.
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*
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* To build a project with checkpoints, follow these steps:
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* - run `prepareCheckpointBuild` on the desired derivation, e.g.
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* checkpointArtifacts = prepareCheckpointBuild virtualbox;
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* - change something you want in the sources of the package,
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* e.g. using source override:
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* changedVBox = pkgs.virtuabox.overrideAttrs (old: {
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* src = path/to/vbox/sources;
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* };
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* - use `mkCheckpointBuild changedVBox checkpointArtifacts`
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* - enjoy shorter build times
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*/
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prepareCheckpointBuild =
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drv:
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drv.overrideAttrs (old: {
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outputs = [ "out" ];
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name = drv.name + "-checkpointArtifacts";
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# To determine differences between the state of the build directory
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# from an earlier build and a later one we store the state of the build
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# directory before build, but after patch phases.
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# This way, the same derivation can be used multiple times and only changes are detected.
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# Additionally, removed files are handled correctly in later builds.
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preBuild =
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(old.preBuild or "")
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+ ''
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mkdir -p $out/sources
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cp -r ./* $out/sources/
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'';
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# After the build, the build directory is copied again
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# to get the output files.
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# We copy the complete build folder, to take care of
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# build tools that build in the source directory, instead of
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# having a separate build directory such as the Linux kernel.
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installPhase = ''
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runHook preCheckpointInstall
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mkdir -p $out/outputs
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cp -r ./* $out/outputs/
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runHook postCheckpointInstall
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unset postPhases
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'';
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dontFixup = true;
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doInstallCheck = false;
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doDist = false;
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});
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}
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// lib.optionalAttrs config.allowAliases {
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mkCheckpointedBuild = lib.warn "`mkCheckpointedBuild` is deprecated, use `mkCheckpointBuild` instead!" mkCheckpointBuild;
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}
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