anchor.diff:          packages = myHaskellPackages spec;
       };
   
  -    hoogleLocal_784 = myHoogleLocal ghcSpec_784;
  -
       };
   }
  
positive.code:       jsEnv = myEnvFun {
          name = "jsTools";
          # buildInputs = [
          paths = [
                # nodePackages.browserify
                nodePackages.jshint
                nodePackages.gulp
  
negative.code:         # threadscope # broken 2014-11-19
      ]));
  
  
      pythonEnv = myEnvFun {
          name = "python";
  