Abstract dataclasses don't work

[inducer]

Consider this snippet, let's name it mypy-abstract-dataclass.py:

from dataclasses import dataclass
from abc import ABC, abstractmethod


@dataclass(frozen=True)
class Something(ABC):
    xyz: int

    @abstractmethod
    def abc(self) -> int:
        pass

I think this should typecheck (subclasses of this can be instantiated without error), but mypy 0.930 says:

mypy-abstract-dataclass.py:5: error: Only concrete class can be given where "Type[Something]" is expected
Found 1 error in 1 file (checked 1 source file)

Your Environment

• Mypy version used: 0.930
• Mypy command-line flags: none
• Mypy configuration options from mypy.ini (and other config files): none
• Python version used: 3.10
• Operating system and version: Linux

[AlexWaygood]

I think this may be a duplicate of #5374? 🙂

[inducer]

Looks that way. Thanks for the pointer!