path/to/venv/lib/python3.10/site-packages/attr/_cmp.pyi

from typing import Any, Callable, Optional, Type

_CompareWithType = Callable[[Any, Any], bool]

def cmp_using(
    eq: Optional[_CompareWithType] = ...,
    lt: Optional[_CompareWithType] = ...,
    le: Optional[_CompareWithType] = ...,
    gt: Optional[_CompareWithType] = ...,
    ge: Optional[_CompareWithType] = ...,
    require_same_type: bool = ...,
    class_name: str = ...,
) -> Type: ...