anchor.diff:      sha256 = "a7a84d5fa07a089186a329528f127c9d73b9de57f1a1131b82bb5320ee651f6a";
     };
   
  -  checkInputs = [ pytest_3  ];
  +  checkInputs = [ pytest_3 ];
     nativeBuildInputs = [ setuptools_scm ];
     propagatedBuildInputs = [ apipkg ];
   
  
positive.code:     rm -v testing/test_channel.py
      rm -v testing/test_xspec.py
      rm -v testing/test_gateway.py
    '';
  
    checkPhase = ''
  
negative.code: { stdenv
  , lib
  , buildPythonPackage
  , isPyPy
  , fetchPypi
  , pytest_3
  , setuptools_scm
  