boehmgc: disabled tests on powerpc64le-linux

[jiegec]

Description of changes

See ivmai/bdwgc#376, the upstream bug has not been fixed.

Things done

• Built on platform(s)
  • x86_64-linux
  • powerpc64le-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/)
• 22.11 Release Notes (or backporting 22.05 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
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[ghost]

Please don't merge this.

The problem on Darwin is caused by the Rosetta emulator; it has nothing to do with the powerpc64le situation:

#191339 (comment)

The test failure isn't a false positive.

Disabling the tests here is risky. Remember that Nix itself uses boehm-gc.

I'm filing another PR that disables the optimization which is causing the tests to fail. Github won't let me ```suggest it here because it touches parts of the file which are more than three lines away from your changes.

[ghost]

Please consider #199978 instead.

[jiegec]

Closed in favor of #199991 199978