anchor.diff:  
   
     pyramid_chameleon = buildPythonPackage rec {
  -    name = "pyramid_chameleon-0.1";
  +    name = "pyramid_chameleon-0.3";
   
       src = pkgs.fetchurl {
         url = "https://pypi.python.org/packages/source/p/pyramid_chameleon/${name}.tar.gz";
  -      md5 = "39b1327a9890f382200bbfde943833d7";
  +      md5 = "5bb5938356dfd13fce06e095f132e137";
       };
   
       propagatedBuildInputs = [
  
positive.code: 
  
    hypatia = buildPythonPackage rec {
      name = "hypatia-0.1a6";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/h/hypatia/${name}.tar.gz";
        md5 = "3a67683c578754cd8f23317db6d28ffd";
      };
  
      buildInputs = [ zope_interface zodb3 ];
  
      meta = {
        maintainers = [ stdenv.lib.maintainers.iElectric ];
  
negative.code: 
    zdaemon = buildPythonPackage rec {
      name = "zdaemon-${version}";
      version = "4.0.0";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/z/zdaemon/${name}.tar.gz";
        md5 = "4056e2ea35855695ed15389d9c168b92";
      };
  
      propagatedBuildInputs  = [ zconfig ];
      
      # too many deps..
      doCheck = false;
  
      meta = {
        description = "A daemon process control library and tools for Unix-based systems";
  