Thanks for making mypy-zope! We've been using it for Synapse (which uses Twisted) and ran into a hiccup.

The following will cause mypy-zope to emit an error:

error: Cannot determine consistent method resolution order (MRO) for "Foo" [misc]

from twisted.internet import protocol

class Foo(protocol.Protocol):
    pass

reveal_type(Foo)

The class hierarchy looks like Foo -> Protocol (which implements IProtocol and ILoggingContext) -> BaseProtocol.

I tried to create a reduced test-case for this, but was not able to, so it might be specific to something Twisted has done. Any help would be appreciated!