anchor.diff:    bits = if stdenv.system == "x86_64-linux" then "x64"
            else "ia32";
   
  +  useGCC = stdenv ? gcc;
  +
     nwEnv = buildEnv {
       name = "node-webkit-env";
       paths = [
  
positive.code:     mkdir -p $out/share/node-webkit
      cp -R * $out/share/node-webkit
  
      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nw
      patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nwsnapshot
  
      ln -s ${udev}/lib/libudev.so $out/share/node-webkit/libudev.so.0
  
  
negative.code:       freetype fontconfig xlibs.libXcomposite alsaLib xlibs.libXdamage
        xlibs.libXext xlibs.libXfixes nss nspr gconf expat dbus xlibs.libXtst
        xlibs.libXi xlibs.libXcursor xlibs.libXrandr libcap libnotify
        (if useGCC then stdenv.gcc else stdenv.cc)
      ];
    };
  
  