anchor.diff:  , pyquery
   , wsgiproxy2
   , PasteDeploy
  -, coverage
   }:
   
   buildPythonPackage rec {
  
positive.code:   pname = "webtest";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "4221020d502ff414c5fba83c1213985b83219cb1cc611fe58aa4feaf96b5e062";
    };
  
  
negative.code:     substituteInPlace setup.py --replace "nose<1.3.0" "nose"
    '';
  
    propagatedBuildInputs = [ webob six beautifulsoup4 waitress ];
  
    checkInputs = [ nose mock PasteDeploy wsgiproxy2 pyquery ];
  
    meta = with stdenv.lib; {
      description = "Helper to test WSGI applications";
  