Mypy fails on usage of attrs package

On the following file name.py

from attr import attrs, attrib


@attrs(frozen=True)
class Name:
    name: str = attrib(converter=str.lower)

    def __str__(self) -> str:
        return self.name

calling mypy as follows

 mypy src --disallow-untyped-calls --disallow-untyped-defs --disallow-untyped-decorators --disallow-incomplete-defs --disallow-any-expr --warn-redundant-casts --warn-unreachable

results in the following errors

name.py:4: error: Expression type contains "Any" (has type "Type[Name]")
name.py:6: error: Unsupported converter, only named functions and types are currently supported

I think both errors are incorrect.

If you agree then please fix!

Start with the reproducible example in name.py and run the supplied mypy command to confirm both diagnostics. Trace how mypy handles the attrs decorator and converter, then verify the example no longer reports these two errors while preserving the intended type checking behavior.