anchor.diff:        homepage = http://www.darwinsys.com/file/;
       };
     };
  -  
  +
     MySQL_python = buildPythonPackage {
       name = "MySQL-python-1.2.3";
  -    
  -    doCheck = false;
  -    
  +
  +    doCheck = false;
  +
       src = fetchurl {
         url = mirror://sourceforge/mysql-python/MySQL-python-1.2.3.tar.gz;
         sha256 = "0vkyg9dmj29hzk7fy77f42p7bfj28skyzsjsjry4wqr3z6xnzrkx";
       };
  -    
  +
       propagatedBuildInputs = [ pkgs.mysql pkgs.zlib nose ];
  -    
  +
       meta = {
         description = "MySQL database binding for Python";
   
  
positive.code: 
    nose = buildPythonPackage {
      name = "nose-0.11.3";
      
      src = fetchurl {
        url = http://python-nose.googlecode.com/files/nose-0.11.3.tar.gz;
        sha256 = "1hl3lbwdfl2a64q3dxc73kbiks4iwx5cixlbavyryd8xdr7iziww";
      };
      
      meta = {
        description = "A unittest-based testing framework for python that makes writing and running tests easier";
      };
  
negative.code:     };
    });
  
    ropemacs = buildPythonPackage (rec {
      version = "0.6";
      name = "ropemacs-${version}";
  
      src = fetchurl {
        url = "mirror://sourceforge/rope/${name}.tar.gz";
        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";
  
  