I have a class like this with field members consisting of different types, and inside my class I have __new__(cls, **kwargs) and I would like to type hint **kwargs.

from typing import Optional

@dataclass
class Foo
    var1: int
    var2: float
    var3: bool
    var4: str
    var5: Optional[list[float]]

    def __new__(cls, **kwargs) -> "Foo":
        return super(Foo, cls).__new__(cls)

I ideally wanna be able to do something like

from typing import Optional
from typing_extensions import Unpack

@dataclass
class Foo
    var1: int
    var2: float
    var3: bool
    var4: str
    var5: Optional[list[float]]

    def __new__(cls, **kwargs: Unpack[Foo]) -> "Foo":
        return super(Foo, cls).__new__(cls)

But referencing Foo within __new__ isn’t possible.