anchor.diff:        --replace "'pytest-runner == 5.2.0'," ""
     '';
   
  -  # Set DROPBOX_TOKEN environment variable to a valid token.
  -  doCheck = false;
  +  doCheck = true;
   
     pythonImportsCheck = [
       "dropbox"
  +  ];
  +
  +  # Set SCOPED_USER_DROPBOX_TOKEN environment variable to a valid value.
  +  disabledTests = [
  +    "test_default_oauth2_urls"
  +    "test_bad_auth"
  +    "test_multi_auth"
  +    "test_refresh"
  +    "test_app_auth"
  +    "test_downscope"
  +    "test_rpc"
  +    "test_upload_download"
  +    "test_bad_upload_types"
  +    "test_clone_when_user_linked"
  +    "test_with_path_root_constructor"
  +    "test_path_root"
  +    "test_path_root_err"
  +    "test_versioned_route"
  +    "test_team"
  +    "test_as_user"
  +    "test_as_admin"
  +    "test_clone_when_team_linked"
     ];
   
     meta = with lib; {
  
positive.code:     owner = "dropbox";
      repo = "dropbox-sdk-python";
      rev = "v${version}";
      sha256 = "sha256-pq/LkyOCS0PnujfN9aIx42aeZ8tw4XvRQ4Vid/nXgWE=";
    };
  
    propagatedBuildInputs = [
      requests
      urllib3
      mock
      setuptools
      stone
    ];
  
    postPatch = ''
  
negative.code: { lib
  , buildPythonPackage
  , pythonOlder
  , fetchFromGitHub
  , requests
  , six
  , stone
  , mock
  , pytest-mock
  , pytestCheckHook
  }:
  
  buildPythonPackage rec {
  