Can't use Callable[..., T] | Callable[..., Awaitable[T]] as a function argument

Code:

I was trying to define a callable that can be async or not and use a TypeVar as the return type, but it seem to be broken, here's the full example:

from typing import Union, Awaitable, Callable, TypeVar, Any

T = TypeVar("T")

_RESOLVER_TYPE = Union[
    Callable[..., T],
    Callable[..., Awaitable[T]],
]

def x() -> int:
    return 1
    
async def a_x() -> int:
    return 1
    
    
def field_ok(
    resolver: _RESOLVER_TYPE,
) -> Any:
    ...
    
def field_broken(
    resolver: _RESOLVER_TYPE[T],
) -> Any:
    ...
    
field_ok(x)
field_ok(a_x)

field_broken(x)
field_broken(a_x)

if I don't pass T it seem to work, no sure what is wrong, the error is:

main.py:31: error: Argument 1 to "field_broken" has 
    incompatible type "Callable[[], Coroutine[Any, Any, int]]"; 
    expected "Union[Callable[..., <nothing>], Callable[..., Awaitable[<nothing>]]]"  [arg-type]

Here's the playground url: https://mypy-play.net/?mypy=latest&python=3.11&gist=6d8ed4a4e55e0d6b2712eff23cd3e3b0

Riproduci l’esempio da main.py usando il mypy playground collegato, confrontando field_ok e field_broken con callable sia sincrone sia asincrone. Traccia come viene interpretata la Union parametrizzata di Callable e Awaitable e considera il problema risolto quando l’esempio non segnala più l’errore incompatible-type per nessuna delle due chiamate.