anchor.diff:        platforms = stdenv.lib.platforms.all;
       };
     };
  -  
  +
     urllib3 = buildPythonPackage rec {
       name = "urllib3-1.8";
   
  
positive.code:     propagatedBuildInputs = [ modules.sqlite3 ];
  
      checkPhase = ''
        ${python.executable} sqla_nose.py 
      '';
  
      meta = {
  
negative.code:       url = "https://pypi.python.org/packages/source/u/urllib3/${name}.tar.gz";
        sha256 = "0pdigfxkq8mhzxxsn6isx8c4h9azqywr1k18yanwyxyj8cdzm28s";
      };
  
      preConfigure = ''
        substituteInPlace test-requirements.txt --replace 'nose==1.3' 'nose'
      '';
  
      checkPhase = ''
        nosetests --cover-min-percentage 70
      '';
  