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nixos-24.05-small
nixpkgs/pkgs/stdenv/darwin
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Silvan Mosberger 776b0b45a3 treewide: format all inactive Nix files 
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 f84e54abd3
    result/bin/apply-formatting $NIXPKGS_PATH
2024-12-10 20:22:27 +01:00
..
bootstrap-files stdenv.darwin: bootstrap darwin using updated tools 2024-04-07 18:33:42 +02:00
default.nix treewide: format all inactive Nix files 2024-12-10 20:22:27 +01:00
make-bootstrap-tools.nix treewide: format all inactive Nix files 2024-12-10 20:22:27 +01:00
override-sdk.nix overrideSDK: handle propagated lists of inputs 2024-08-02 21:55:32 +00:00
portable-libsystem.sh darwin.stdenv: only run install_name_tool on files 2023-07-08 20:49:50 -06:00
README.md darwin.stdenv: refactor stdenv definition 2023-07-02 17:56:24 -04:00

README.md

Darwin stdenv design goals

There are two more goals worth calling out explicitly:

  1. The standard environment should build successfully with sandboxing enabled on Darwin. It is fine if a package requires a sandboxProfile to build, but it should not be necessary to disable the sandbox to build the stdenv successfully; and
  2. The output should depend weakly on the bootstrap tools. Historically, Darwin required updating the bootstrap tools prior to updating the version of LLVM used in the standard environment. By not depending on a specific version, the LLVM used on Darwin can be updated simply by bumping the definition of llvmPackages in all-packages.nix.

Updating the stdenv

There are effectively two steps when updating the standard environment:

  1. Update the definition of llvmPackages in all-packages.nix for Darwin to match the value of llvmPackages.latest in all-packages.nix. Timing-wise, this done currently using the spring release of LLVM and once llvmPackages.latest has been updated to match. If the LLVM project has announced a release schedule of patch updates, wait until those are in nixpkgs. Otherwise, the LLVM updates will have to go through staging instead of being merged into master; and
  2. Fix the resulting breakage. Most things break due to additional warnings being turned into errors or additional strictness applied by LLVM. Fixes may come in the form of disabling those new warnings or by fixing the actual source (e.g., with a patch or update upstream). If the fix is trivial (e.g., adding a missing int to an implicit declaration), it is better to fix the problem instead of silencing the warning.