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