anchor.diff:            pkgconfig 
             cpio
           ] ++ strPkgs pkgs 
  -          ++ lib.optional stdenv.isLinux apacheAntOpenJDK
  +          ++ lib.optional stdenv.isLinux ant
             ++ lib.optional stdenv.isDarwin antDarwinNative
             ;
   
  
positive.code:       releaseTools.nixBuild rec {
          name = "webdsl-java";
          src = tarball;
          buildInputs = [pkgconfig cpio ecj apacheAntOpenJDK strcJava which fastjar openjdk] ++ strPkgs pkgs;
  
          configureFlags = ["--enable-java-backend"] ;
  
  
negative.code:           subversion
            automake
            autoconf
            ant 
          ] ++ strPkgs pkgs ;
        };
  
  