Remove uvloop event policy (#29835)

* Remove uvloop event policy

* Clean tests

* Fix lint

* Cleanup statment

homeassistant/__main__.py

@@ -15,12 +15,10 @@ if TYPE_CHECKING:
 
 
 def set_loop() -> None:
-    """Attempt to use uvloop."""
+    """Attempt to use different loop."""
     import asyncio
     from asyncio.events import BaseDefaultEventLoopPolicy
 
-    policy = None
-
     if sys.platform == "win32":
         if hasattr(asyncio, "WindowsProactorEventLoopPolicy"):
             # pylint: disable=no-member
@@ -33,15 +31,7 @@ def set_loop() -> None:
                 _loop_factory = asyncio.ProactorEventLoop
 
             policy = ProactorPolicy()
-    else:
-        try:
-            import uvloop
-        except ImportError:
-            pass
-        else:
-            policy = uvloop.EventLoopPolicy()
 
-    if policy is not None:
         asyncio.set_event_loop_policy(policy)
 
 

tests/conftest.py

@@ -1,8 +1,6 @@
 """Set up some common test helper things."""
-import asyncio
 import functools
 import logging
-import os
 from unittest.mock import patch
 
 import pytest
@@ -26,10 +24,6 @@ from tests.test_util.aiohttp import (
     mock_aiohttp_client,
 )  # noqa: E402 module level import not at top of file
 
-if os.environ.get("UVLOOP") == "1":
-    import uvloop
-
-    asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
 
 logging.basicConfig(level=logging.DEBUG)
 logging.getLogger("sqlalchemy.engine").setLevel(logging.INFO)