anchor.diff:          attr acl paxctl zlib pcre;
       };
     };
  -  
  -  
  +
  +
     testBootstrapTools = let
       defaultPkgs = allPackages { inherit system platform; };
     in derivation {
  
positive.code:       ];
  
      overrides = pkgs: {
        inherit cc;
  
        gcc = cc;
  
        inherit (stage4.pkgs)
  
negative.code: 
      buildCommand = ''
        export PATH=${bootstrapTools}/bin
  
        ls -l
        mkdir $out
        mkdir $out/bin
  