xnu: use python3Minimal instead of python3

[reckenrode]

Description of changes

xnu does not require a Python that supports configd, so use a minimal one without support. Doing this prevents an infinite recuresion when building configd with xpc, which is needed to build with a newer LLVM.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[wegank]

The change being in pkgs/os-specific/darwin/apple-sdk/default.nix, how does it affect darwin.xnu?

[reckenrode]

Looks like I might have cherry-picked the wrong commit. Let me dig into this to see what happened and whether this one is even still necessary.

[reckenrode]

I’m not sure what happened here. At one point while working on a configd fix, I ran into an infinite recursion. I thought I modified default.nix for xnu, but I obviously didn’t. I dropped this commit from my local branch, and it still doesn’t have an infinite recursion, so I guess that’s fine.

However, I do have an actual fix for xnu. It fails to build with newer clangs due needing -lc++abi on one of the programs it builds. I’m going to close this PR and push the correct one. Thanks for the catch!