anchor.diff:      homepage = https://github.com/pytest-dev/pytest-rerunfailures;
       license = licenses.mpl20;
       maintainers = with maintainers; [ jgeerds ];
  -    platforms = platforms.all;
     };
   }
  
positive.code: { stdenv, buildPythonPackage, fetchPypi, pytest, mock }:
  
  buildPythonPackage rec {
    name = "${pname}-${version}";
    pname = "pytest-rerunfailures";
    version = "4.0";
  
  
negative.code:     sha256 = "18lpy6d9b4ck8j3jwh4vmxj54is0fwanpmpg70qg4y0fycdqzwks";
    };
  
    checkInputs = [ pytest mock ];
  
    checkPhase = ''
      py.test
  