anchor.diff:  
     tarsnapper = buildPythonPackage rec {
       name = "tarsnapper-0.2.1";
  +    disabled = isPy3k;
   
       src = fetchgit {
         url = https://github.com/miracle2k/tarsnapper.git;
  
positive.code:       sha256 = "a39ce0e321e40e9758bf7b9128d316c71b35b80eabc84f13df492083bb6f1cc6";
      };
  
      buildPhase = "python setup.py build";
      doCheck = false;
      postInstall = "ln -s $out/bin/osc-wrapper.py $out/bin/osc";
  
  
negative.code:     };
    });
  
    moinmoin = buildPythonPackage (rec {
      name = "moinmoin-${ver}";
      disabled = isPy3k;
      ver = "1.9.7";
  
      src = fetchurl {
        url = "http://static.moinmo.in/files/moin-${ver}.tar.gz";
  