Frazer McLean

[ORY Hydra](https://github.com/ory/hydra) had an API where you accept a parameter like `/login?login_challenge={challenge}`, and then you call Hydra's API with `/oauth2/auth/requests/login/{challenge}`. They recently changed to use query parameters so the API...

`multiproc.py` can be copied almost exactly by replacing multiprocessing with billiard everywhere and removing the `env.PYVERSION` check. I think what might be missing from coverage is an appropriate plugin entrypoint...

@nedbat `patch_billiard` is from a copy of [coverage/multiproc.py](https://github.com/nedbat/coveragepy/blob/d1bb8e947c343e6f5c5772573d8adbb3267706e6/coverage/multiproc.py) with `s/multiprocessing/billiard`. As far as the original topic of this issue goes, I fear I may have spoken too soon. Celery uses...

I may be thinking about this wrong, but wouldn't this also be useful for non-session fixtures? In my case what I'm trying is different function scoped fixtures (e.g. `fix_pre1, fix_pre2,...

I used the workaround from @dcbaker, but you can use `slots=True` instead of defining it manually: ```python from typing import Generic, TypeVar import attr T = TypeVar('T') @attr.s(these={'foo': attr.ib()}, slots=True)...

Would this be merged if I added documentation, or does this not fit your API?

bump?

I was surprised to learn that snapshot-diff doesn't pass the serializers to pretty-format, I'd expect it to do what jest-snapshot does: https://github.com/facebook/jest/blob/03cf86f60c42036a183c4fecac24882a06835427/packages/jest-snapshot/src/utils.ts#L162-L175

Wouldn't it need to call `.begin()` on the result from `engine_from_config`?

I created a strategy for asyncio at https://github.com/RazerM/sqlalchemy_aio, based on alchimia. It's currently a proof of concept (lacks tests and documentation).