{ lib
, stdenv
, buildPythonPackage
, pythonOlder
, fetchPypi

# build-system
, cython
, setuptools

# native dependencies
, libuv
, CoreServices
, ApplicationServices

# tests
, aiohttp
, psutil
, pyopenssl
, pytestCheckHook
}:

buildPythonPackage rec {
  pname = "uvloop";
  version = "0.19.0";
  pyproject = true;

  disabled = pythonOlder "3.8";

  src = fetchPypi {
    inherit pname version;
    hash = "sha256-Akb0/Rvyv3AuBrDUXukWd+5cMSQvOaq06m/gxRrt0P0=";
  };

  nativeBuildInputs = [
    cython
    setuptools
  ];

  env.LIBUV_CONFIGURE_HOST = stdenv.hostPlatform.config;

  buildInputs = [
    libuv
  ] ++ lib.optionals stdenv.isDarwin [
    CoreServices
    ApplicationServices
  ];

  nativeCheckInputs = [
    aiohttp
    pyopenssl
    pytestCheckHook
    psutil
  ];

  pytestFlagsArray = [
    # Tries to run "env", but fails to find it, even with coreutils provided
    "--deselect=tests/test_process.py::Test_UV_Process::test_process_env_2"
    "--deselect=tests/test_process.py::Test_AIO_Process::test_process_env_2"
    # AssertionError: b'' != b'out\n'
    "--deselect=tests/test_process.py::Test_UV_Process::test_process_streams_redirect"
    "--deselect=tests/test_process.py::Test_AIO_Process::test_process_streams_redirect"
  ] ++ lib.optionals (stdenv.isDarwin) [
    # Segmentation fault
    "--deselect=tests/test_fs_event.py::Test_UV_FS_EVENT_RENAME::test_fs_event_rename"
    # Broken: https://github.com/NixOS/nixpkgs/issues/160904
    "--deselect=tests/test_context.py::Test_UV_Context::test_create_ssl_server_manual_connection_lost"
  ];

  disabledTestPaths = [
    # ignore code linting tests
    "tests/test_sourcecode.py"
  ];

  preCheck = ''
    # force using installed/compiled uvloop
    rm -rf uvloop
  '' + lib.optionalString stdenv.isDarwin ''
    # Work around "OSError: AF_UNIX path too long"
    # https://github.com/MagicStack/uvloop/issues/463
    export TMPDIR="/tmp"
  '';

  pythonImportsCheck = [
    "uvloop"
    "uvloop.loop"
  ];

  # Some of the tests use localhost networking.
  __darwinAllowLocalNetworking = true;

  meta = with lib; {
    changelog = "https://github.com/MagicStack/uvloop/releases/tag/v${version}";
    description = "Fast implementation of asyncio event loop on top of libuv";
    homepage = "https://github.com/MagicStack/uvloop";
    license = licenses.mit;
    maintainers = with maintainers; [ ];
  };
}