Support python 3.9 for thee -- not for me

Author: strawgate

pydantic_ai_slim/pydantic_ai/toolsets/abstract.py

@@ -2,10 +2,10 @@
 
 from abc import ABC, abstractmethod
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, Any, Callable, Generic, Literal, Protocol, TypeAlias
+from typing import TYPE_CHECKING, Any, Callable, Generic, Literal, Protocol
 
 from pydantic_core import SchemaValidator
-from typing_extensions import Self
+from typing_extensions import Self, TypeAlias
 
 from .._run_context import AgentDepsT, RunContext
 from ..tools import ToolDefinition, ToolsPrepareFunc