anchor.diff:    zc_buildout_nix = callPackage ../development/python-modules/buildout-nix { };
   
     zc_recipe_egg = self.zc_recipe_egg_buildout171;
  -  zc_buildout = self.zc_buildout171;
  -  zc_buildout2 = self.zc_buildout221;
  +  zc_buildout = self.zc_buildout221;
  +
     zc_buildout221 = buildPythonPackage rec {
       name = "zc.buildout-2.2.1";
   
  
positive.code:       url = "mirror://pypi/z/zc.buildout/${name}.tar.gz";
        sha256 = "a6122ea5c06c6c044a9efce4a3df452c8573e1aebfda7b24262655daac894ef5";
      };
  
     meta = {
        homepage = "http://www.buildout.org";
        description = "A software build and configuration system";
        license = licenses.zpt21;
        maintainers = with maintainers; [ garbas ];
      };
    };
  
    zc_buildout171 = buildPythonPackage rec {
      name = "zc.buildout-1.7.1";
  
      disabled = isPy3k;
  
      src = pkgs.fetchurl {
        url = "mirror://pypi/z/zc.buildout/${name}.tar.gz";
        sha256 = "a5c2fafa4d073ad3dabec267c44a996cbc624700a9a49467cd6b1ef63d35e029";
      };
  
     meta = {
        homepage = "http://www.buildout.org";
        description = "A software build and configuration system";
        license = licenses.zpt21;
        maintainers = with maintainers; [ garbas ];
      };
    };
  
    zc_buildout152 = buildPythonPackage rec {
      name = "zc.buildout-1.5.2";
  
      disabled = isPy3k;
  
      src = pkgs.fetchurl {
        url = "mirror://pypi/z/zc.buildout/${name}.tar.gz";
        sha256 = "0ac5a325d3ffbc5a988fb3ba87f4159d4769cc73e3331cb5234edc8839b6506b";
      };
  
     # TODO: consider if this patch should be an option
     # It makes buildout useful in a nix profile, but this alters the default functionality
     patchPhase = ''
       sed -i "s/return (stdlib, site_paths)/return (stdlib, sys.path)/g" src/zc/buildout/easy_install.py
     '';
  
     meta = {
        homepage = "http://www.buildout.org";
  
negative.code:     };
    };
  
    check-manifest = buildPythonPackage rec {
      name = "check-manifest";
      version = "0.30";
  