anchor.diff:      };
     });
   
  -  rope = buildPythonPackage (rec {
  +  rope = pkgs.stdenv.mkDerivation rec {
       version = "0.9.3";
       name = "rope-${version}";
   
  
positive.code:       sha256 = "1afqybmjn7fqkwx8y8kx1kfx181ix73cbq3a0d5n7ryjm7k1r0s4";
      };
  
      doCheck = false;
      meta = with stdenv.lib; {
        description = "a plugin for performing python refactorings in emacs";
        homepage = http://rope.sf.net/ropemacs.html;
        maintainers = [ maintainers.goibhniu ];
        license = licenses.gpl2;
      };
    });
  
    pysvn = pkgs.stdenv.mkDerivation {
      name = "pysvn-1.7.2";
  
negative.code:       sha256 = "1092rlsfna7rm1jkdanilsmw7rr3hlkgyji02xfd02wfcm8xa2i7";
      };
  
      buildInputs = [ python ];
  
      installPhase = ''
        python setup.py install --prefix=$out
      '';
  
      meta = with stdenv.lib; {
        description = "python refactoring library";
        homepage = http://rope.sf.net;
        maintainers = [ maintainers.goibhniu ];
        license = licenses.gpl2;
      };
    };
  
    ropemacs = pkgs.stdenv.mkDerivation rec {
      version = "0.6";
      name = "ropemacs-${version}";
  
  