anchor.diff:  
     namebench = buildPythonPackage (rec {
       name = "namebench-1.0.5";
  +    disabled = isPy3k;
   
       src = fetchurl {
         url = "http://namebench.googlecode.com/files/${name}.tgz";
  
positive.code:   googlecl = buildPythonPackage rec {
      version = "0.9.14";
      name    = "googlecl-${version}";
  
      src = fetchurl {
        url    = "https://googlecl.googlecode.com/files/${name}.tar.gz";
  
negative.code: 
    taskcoach = buildPythonPackage rec {
      name = "TaskCoach-1.3.22";
      disabled = isPy3k;
  
      src = fetchurl {
        url = "mirror://sourceforge/taskcoach/${name}.tar.gz";
  