anchor.diff:    '';
   
     # many tests expect a running tinkerpop server
  +  disabledTestPaths = [
  +    "tests/driver/test_client.py"
  +    "tests/driver/test_driver_remote_connection.py"
  +    "tests/driver/test_driver_remote_connection_threaded.py"
  +    "tests/process/test_dsl.py"
  +    "tests/structure/io/test_functionalityio.py"
  +  ];
     pytestFlagsArray = [
  -    "--ignore=tests/driver/test_client.py"
  -    "--ignore=tests/driver/test_driver_remote_connection.py"
  -    "--ignore=tests/driver/test_driver_remote_connection_threaded.py"
  -    "--ignore=tests/process/test_dsl.py"
  -    "--ignore=tests/structure/io/test_functionalityio.py"
       # disabledTests doesn't quite allow us to be precise enough for this
       "-k 'not (TestFunctionalGraphSONIO and (test_timestamp or test_datetime or test_uuid))'"
     ];
  
positive.code: { lib, buildPythonPackage, fetchFromGitHub
  , pytestCheckHook, pyhamcrest, pytestrunner
  , six, isodate, tornado, aenum, radish-bdd, mock
  }:
  
  buildPythonPackage rec {
  
negative.code:       --replace 'PyHamcrest>=1.9.0,<2.0.0' 'PyHamcrest' \
        --replace 'radish-bdd==0.8.6' 'radish-bdd' \
        --replace 'mock>=3.0.5,<4.0.0' 'mock' \
        --replace 'pytest>=4.6.4,<5.0.0' 'pytest' \
        --replace 'importlib-metadata<3.0.0' 'importlib-metadata' \
        --replace 'pytest-runner==5.2' ' '
    '';
  
    # setup-requires requirements
    nativeBuildInputs = [
      importlib-metadata
    ];
    propagatedBuildInputs = [
      aenum
      isodate
      six
      tornado
    ];
  
    checkInputs = [
      pytestCheckHook
      mock
      pyhamcrest
      radish-bdd
    ];
  
    # disable custom pytest report generation
    preCheck = ''
  