anchor.diff:        authentication mechanisms to access Google APIs.
       '';
       homepage = "https://github.com/googleapis/google-auth-library-python";
  -    changelog = "https://github.com/googleapis/google-auth-library-python/blob/v${version}/CHANGELOG.md";
  +    changelog =
  +      "https://github.com/googleapis/google-auth-library-python/blob/v${version}/CHANGELOG.md";
       # Documentation: https://googleapis.dev/python/google-auth/latest/index.html
       license = licenses.asl20;
       maintainers = with maintainers; [ ];
  
positive.code: { stdenv, buildPythonPackage, fetchpatch, fetchPypi
  , cachetools
  , flask
  , freezegun
  , mock
  , oauth2client
  , pyasn1-modules
  , pytest
  , pytest-localserver
  , requests
  , responses
  , rsa
  , setuptools
  , six
  , urllib3
  }:
  
  buildPythonPackage rec {
    pname = "google-auth";
    version = "1.20.1";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "2f34dd810090d0d4c9d5787c4ad7b4413d1fbfb941e13682c7a2298d3b6cdcc8";
    };
  
    propagatedBuildInputs = [ six pyasn1-modules cachetools rsa setuptools ];
  
  
negative.code:     freezegun
      mock
      oauth2client
      pytestCheckHook
      pytest-localserver
      requests
      responses
      urllib3
    ];
  
    meta = with stdenv.lib; {
      description = "Google Auth Python Library";
  