Setting `disallow_any = generics` in mypy.ini breaks `disallow_untyped_defs = True`

[JelleZijlstra]

I have the following code (rpc_server.py):

def get_tasks(self):
    return 'whatever'

And mypy.ini:

[mypy]
disallow_untyped_defs = True
disallow_any = generics

I would expect to get an error because get_tasks is missing an argument annotation and a return type annotation.

However, mypy --config-file /path/to/mypy.ini /path/to/rpc_server.py gives no errors. When I remove disallow_any = generics, I get the expected error. I also get the expected error if I simply do mypy --disallow-untyped-defs --disallow-any=generics—somehow it makes a difference that I use a config file.

[JelleZijlstra]

I found the root cause and will submit a PR. A couple of untyped defs slipped into mypy itself because of this bug.