convert a protocol to an interface

[graingert]

it should be possible to create a zope.interface.Interface by introspecting a typing.Protocol

class SomeProtocol(typing.Protocol):
    @property
    def foo(self) -> str: ...

    def ham(self) -> int: ...

ISome = mypy_zope.fromProtocol("ISome", SomeProtocol)

[graingert]

this would also allow me to define self-types: #44

[kedder]

I'm not a big fan of having mypy_zope to be executed at runtime. It is a static analyzer and ideally shouldn't be a runtime dependency. And Protocols are kind of alternative to zope interfaces, so I suspect they will not play well together.

[glyph]

This is probably something that should land in zope.interface itself for the runtime component, but mypy-zope would need to be aware of it.

As far as protocols and interfaces playing nicely together, I think it should work fine; they're mostly different spellings of the same thing.