anchor.diff:        abcde = linux;
         aspell = all;
         atlas = linux;
  -      bazaar = linux; # first let sqlite3 work on darwin
  +      bazaar = linux;
         binutils = linux;
         bind = linux;
         bvi = all;
  
positive.code: 
        stdenvBootstrapTools.x86_64-linux =
          { inherit (import ../stdenv/linux/make-bootstrap-tools.nix { system = "x86_64-linux"; }) dist test; };
  
        stdenvBootstrapTools.x86_64-darwin =
          let
            bootstrap = import ../stdenv/darwin/make-bootstrap-tools.nix { system = "x86_64-darwin"; };
          in {
            # Lightweight distribution and test
            inherit (bootstrap) dist test;
            # Test a full stdenv bootstrap from the bootstrap tools definition
            inherit (bootstrap.test-pkgs) stdenv;
          };
  
      } // (mapTestOn ((packagePlatforms pkgs) // rec {
  
  
negative.code: { nixpkgs ? { outPath = (import ./all-packages.nix {}).lib.cleanSource ../..; revCount = 1234; shortRev = "abcdef"; }
  , officialRelease ? false
  , # The platforms for which we build Nixpkgs.
    supportedSystems ? [ "x86_64-linux" "i686-linux" ]
  , scrubJobs ? true
  }:
  
  