anchor.diff:    ];
   
     meta = with stdenv.lib; {
  +    description = "Micro webdevelopment framework for Python";
  +    homepage = http://flask.pocoo.org/;
  +    licenses = license.bsd3;
       maintainers = with maintainers; [
  +      codyopel
         wkennington
       ];
       platforms = with platforms;
  
positive.code: }:
  
  let
    version = "0.11";
  in
  buildPythonPackage {
    name = "Flask-${version}";
  
negative.code:   src = fetchPyPi {
      package = "Flask";
      inherit version;
      sha256 = "b4713f2bfb9ebc2966b8a49903ae0d3984781d5c878591cf2f7b484d28756b0e";
    };
  
    propagatedBuildInputs = [
  