anchor.diff:          ];
     };
   
  -  python34env = buildEnv { 
  +  python34env = buildEnv {
       name = "Python34Env";
       paths = [
           libxml2
  
positive.code:   };
    supervisordev34 = buildPythonPackage {
       name = "supervisordev34";
       buildInputs = [ python34 meld334 ];
       src = pkgs.fetchurl {
          url = https://github.com/Supervisor/supervisor/archive/master.zip;
          sha256 = "f292f520aeea8159ba281eef52a4c94c53cf4b2b8e090ecb9fa884f2205f26e2";
       };
       propagatedBuildInputs = [ meld334 ];
    };
    
    pyflakes = stdenv.lib.overrideDerivation python34Packages.pyflakes (oldAttrs: {
       name = "pyflakes-0.8.1";
       src = fetchurl {
         url = "http://pypi.python.org/packages/source/p/pyflakes/pyflakes-0.8.1.tar.gz";
         md5 = "905fe91ad14b912807e8fdc2ac2e2c23";
       };
     }); 
  
  }
  
negative.code:   devtools = buildEnv {
      name = "devtools";
      paths = [
          git
          gitAndTools.tig
          ];
    };
  