anchor.diff:                # Test a full stdenv bootstrap from the bootstrap tools definition
                 inherit (bootstrap.test-pkgs) stdenv;
               };
  -
  +        } // optionalAttrs supportDarwin.aarch64 {
             # Cross compiled bootstrap tools
             aarch64-darwin =
               let
  
positive.code:               */
              ]
              ++ lib.collect lib.isDerivation jobs.stdenvBootstrapTools
              ++ lib.optionals supportDarwin [
                jobs.stdenv.x86_64-darwin
                jobs.cargo.x86_64-darwin
                jobs.go.x86_64-darwin
  
negative.code: 
    systemsWithAnySupport = supportedSystems ++ limitedSupportedSystems;
  
    supportDarwin = lib.genAttrs [
      "x86_64"
      "aarch64"
    ] (arch: builtins.elem "${arch}-darwin" systemsWithAnySupport);
  
    jobs =
      { tarball = import ./make-tarball.nix { inherit pkgs nixpkgs officialRelease supportedSystems; };
  