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path: root/pkgs/development/python-modules/websockets/default.nix
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{
  lib,
  stdenv,
  buildPythonPackage,
  fetchFromGitHub,
  unittestCheckHook,
  pythonOlder,
  setuptools,
}:

buildPythonPackage rec {
  pname = "websockets";
  version = "12.0";
  pyproject = true;

  disabled = pythonOlder "3.7";

  src = fetchFromGitHub {
    owner = "aaugustin";
    repo = pname;
    rev = "refs/tags/${version}";
    hash = "sha256-sOL3VI9Ib/PncZs5KN4dAIHOrBc7LfXqT15LO4M6qKg=";
  };

  nativeBuildInputs = [ setuptools ];

  patchPhase = ''
    # Disable all tests that need to terminate within a predetermined amount of
    # time. This is nondeterministic.
    sed -i 's/with self.assertCompletesWithin.*:/if True:/' \
      tests/legacy/test_protocol.py

    # Disables tests relying on tight timeouts to avoid failures like:
    #   File "/build/source/tests/legacy/test_protocol.py", line 1270, in test_keepalive_ping_with_no_ping_timeout
    #     ping_1_again, ping_2 = tuple(self.protocol.pings)
    #   ValueError: too many values to unpack (expected 2)
    for t in \
             test_keepalive_ping_stops_when_connection_closing \
             test_keepalive_ping_does_not_crash_when_connection_lost \
             test_keepalive_ping \
             test_keepalive_ping_not_acknowledged_closes_connection \
             test_keepalive_ping_with_no_ping_timeout \
      ; do
      sed -i "s/def $t(/def skip_$t(/" tests/legacy/test_protocol.py
    done
  '';

  nativeCheckInputs = [ unittestCheckHook ];

  # Tests fail on Darwin with `OSError: AF_UNIX path too long`
  doCheck = !stdenv.hostPlatform.isDarwin;

  pythonImportsCheck = [ "websockets" ];

  meta = with lib; {
    description = "WebSocket implementation in Python";
    homepage = "https://websockets.readthedocs.io/";
    changelog = "https://github.com/aaugustin/websockets/blob/${version}/docs/project/changelog.rst";
    license = licenses.bsd3;
    maintainers = with maintainers; [ fab ];
  };
}