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:       platforms = stdenv.lib.platforms.all;
      };
    };
  
  
    deform_bootstrap = buildPythonPackage rec {
  
negative.code: 
    transaction = buildPythonPackage rec {
      name = "transaction-${version}";
      version = "1.4.3";
  
      src = fetchurl {
        url = "http://pypi.python.org/packages/source/t/transaction/${name}.tar.gz";
        md5 = "b4ca5983c9e3a0808ff5ff7648092c76";
      };
  
      propagatedBuildInputs = [ zope_interface ];
  