anchor.diff:  
     meta = with lib; {
       description = "A featureful, correct URL for Python";
  +    homepage = "https://github.com/python-hyper/hyperlink";
       license = licenses.mit;
       platforms = platforms.all;
       maintainers = with maintainers; [ apeschar ];
  
positive.code: 
    src = fetchPypi {
      inherit pname version;
      sha256 = "427af957daa58bc909471c6c40f74c5450fa123dd093fc53efd2e91d2705a56b";
    };
  
    propagatedBuildInputs = [ idna ]
  
negative.code: { lib
  , buildPythonPackage
  , fetchPypi
  , isPy27
  , idna
  , typing ? null
  }:
  
  buildPythonPackage rec {
    pname = "hyperlink";
  