anchor.diff:    console-view = pythonPackages.buildPythonPackage rec {
       name = "${pname}-${version}";
       pname = "buildbot-console-view";
  -    version = "0.9.9.post2";
  +    version = buildbot-pkg.version;
   
       src = pythonPackages.fetchPypi {
         inherit pname version;
  -      sha256 = "0mmlxzlzl0r97jf0g98m7k1b13mzzy80445i0biazkj0vzkpwxza";
  +      sha256 = "16wxgnh35916c2gw34971ynx319lnm9addhqvii885vid44pqim0";
       };
   
       propagatedBuildInputs = with pythonPackages; [ buildbot-pkg ];
  
positive.code:   grid-view = pythonPackages.buildPythonPackage rec {
      name = "${pname}-${version}";
      pname = "buildbot-grid-view";
      version = "0.9.9.post2";
  
      src = pythonPackages.fetchPypi {
        inherit pname version;
        sha256 = "16y7br1yniby8yp932ildn14cxvbw5ywx36d703c4d98dmnlrpaw";
      };
  
      propagatedBuildInputs = with pythonPackages; [ buildbot-pkg ];
  
negative.code:   buildbot-pkg = pythonPackages.buildPythonPackage rec {
      name = "${pname}-${version}";
      pname = "buildbot-pkg";
      version = "0.9.11";
  
      src = pythonPackages.fetchPypi {
        inherit pname version;
        sha256 = "1gh7wj9z7n7yfs219jbv9pdd2w8dwj6qpa090ffjkfpgd3xana33";
      };
  
      propagatedBuildInputs = with pythonPackages; [ setuptools ];
  