fix py310 error because of typing_extensions not installed.

asyncer/_compat.py

@@ -1,12 +1,17 @@
 # AnyIO 4.1.0 renamed cancellable to abandon_on_cancel
 import importlib
 import importlib.metadata
+import sys
 from typing import Callable, TypeVar, Union
 
 import anyio
 import anyio.to_thread
 from anyio import CapacityLimiter
-from typing_extensions import TypeVarTuple, Unpack
+
+if sys.version_info >= (3, 11):
+ from typing import TypeVarTuple, Unpack
+else:
+ from typing_extensions import TypeVarTuple, Unpack
 
 ANYIO_VERSION = importlib.metadata.version("anyio")
 

pyproject.toml

@@ -32,7 +32,7 @@ classifiers = [
 ]
 dependencies = [
  "anyio >=3.4.0,<5.0",
- "typing_extensions >=4.8.0; python_version < '3.10'"
+ "typing_extensions >=4.8.0; python_version < '3.11'"
 ]
 
 [project.urls]