mypy doesn't know about empty unpacked tuples

[A5rocks]

Bug Report

Blah[()] works sometimes when Blah[Unpack[tuple[()]]] doesn't and that doesn't make sense.

To Reproduce

from typing import Generic, TypeVarTuple, Unpack

Ts = TypeVarTuple("Ts")

class Blah(Generic[Unpack[Ts]]):
    pass

x: Blah[()]  # works
y: Blah[Unpack[tuple[()]]]  # E: Missing type parameters for generic type "Blah[()]"

Expected Behavior

Both should work.

Actual Behavior

Only first works.

Your Environment

Checked on mypy playground.

• Mypy version used: v1.14
• Mypy command-line flags: strict
• Mypy configuration options from mypy.ini (and other config files): N/A
• Python version used: 3.12