anchor.diff:  , pytestCheckHook
   }:
   
  -let
  -in buildPythonPackage rec {
  +buildPythonPackage rec {
     pname = "isort";
  -  version = "5.6.4";
  +  version = "5.9.3";
     format = "pyproject";
   
     src = fetchFromGitHub {
       owner = "PyCQA";
       repo = "isort";
       rev = version;
  -    sha256 = "1m7jpqssnbsn1ydrw1dn7nrcrggqcvj9v6mk5ampxmvk94xd2r2q";
  +    sha256 = "sha256-JbRZ/3Xz35tGoCNnQesR08Sjoz3yimxZyxhhOXGvmXw=";
     };
   
     nativeBuildInputs = [
  
positive.code:   '';
  
    pytestFlagsArray = [
      "--ignore=tests/integration/" # pulls in 10 other packages
      "--ignore=tests/unit/profiles/test_black.py" # causes infinite recursion to include black
    ];
  
negative.code:     # plugin not available
      "test_isort_literals_issue_1358"
      "test_isort_supports_formatting_plugins_issue_1353"
      "test_sort_configurable_sort_issue_1732"
      "test_value_assignment_list"
      # profiles not available
      "test_isort_supports_shared_profiles_issue_970"
  