So, I have a Protocol class named Game:

from typing import Any, Protocol

class Game(Protocol):
    """Protocol for implementing a specific chess game."""

    move_played: Any  # ClassVar[Signal[Move]]  (Move is from python-chess library)

There's no way to annotate my move_played signal so that mypy would be happy. I thought ClassVar[Signal] would be okay, but no such luck. Also, I'd like to annotate that the instance of Signal will carry a Move object.

The concrete class defines it like this:

class ClassicGame(QObject):
    """Implementation of a classic chess game."""

    move_played: Signal = Signal(Move)

Please help me add a proper type hint to my move_played custom signal in my Protocol class.

Please note that

ClassVar[Signal] = ...

is also fruitless.