There are various places in the stdlib where we access the .__annotations__ attribute. Under PEP-649 / PEP-749, this now forces evaluation of lazy annotations. We should avoid evaluating annotations where it is not necessary.

For example, currently typing.Protocol evaluates its annotations at protocol creation time.

Linked PRs

• gh-132493: Support deferred annotations in Protocols #132494
• gh-132493: lazy evaluation of annotations in typing._proto_hook #132534
• gh-132493: Avoid eager import of annotationlib in typing (again) #132596
• gh-132493: Avoid eager evaluation of annotations in @reprlib.recursive_repr() #133411
• gh-132493: Remove __annotations__ usage in inspect._signature_is_functionlike #133415
• [3.14] gh-132493: Remove __annotations__ usage in inspect._signature_is_functionlike (GH-133415) #133796