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