anchor.diff:        in
           with import "${nixos}/lib/testing.nix" {inherit nixpkgs services; system = "i686-linux";} ;
           runInMachineWithX {
  -          drv = pkgs.lib.overrideDerivation (build { inherit tarball; }) (oldAttrs: { configureFlags = ""; buildInputs = oldAttrs.buildInputs ++ [pkgs.firefox] ; }) ;
  +          drv = pkgs.lib.overrideDerivation (build { inherit tarball; }) (oldAttrs: { configureFlags = ""; nativeBuildInputs = oldAttrs.nativeBuildInputs ++ [pkgs.firefox] ; }) ;
           };
   
     };
  
positive.code:           ensureDir $out/nix-support
  
            mkdir webdsl 
            cp -R ${buildJava}/* webdsl/
            chmod -R 755 webdsl/
   
            # cleanup
  
negative.code:       };
  
      buildJavaZip = 
        { tarball ? jobs.tarball {}
        , strcJava ? { outPath = ./. ;}
        }:
        pkgs.stdenv.mkDerivation {
          name = "webdsl-java.zip"; 
          buildInputs = [pkgs.zip]; 
  