PyPy support about nameko HOT 3 OPEN

The upcoming gevent 1.1 release supports PyPy, is that an option?

from nameko.

possibly, but only in the long term. gevent has different semantics to eventlet, so it's not a straight swap. at the moment, nameko is built assuming eventlet.

we have talked about abstracting out the differences and making nameko work with either eventlet or gevent, but that's only an idea at this point

from nameko.

edited:
Recent versions of PyPy support both eventlet and gevent.

Nameko is passing whole test suite under PyPy3 2.4.0 (Python 3.2.5 compatible), but fails with plenty of exceptions under PyPy 4.0.0 (Python 2.7.10 compatible). I haven't identified why is it so.

However, code coverage check has to be disabled when testing for either PyPy. Coverage plugin uses CTracer extension that's written in C and was made to work with greenlets (eventlet), but PyPy can not load it. So it's trying to use PyTracer instead - which does not support eventlet.

We had Nameko working under PyPy 2.4.0 for quite a while in testing environment and there haven't been any issues. I think it would be worth to extend tox/travis config to include PyPy at least as an optional build step.

On another note, our initial performance tests didn't show any improvements for Nameko itself when running under PyPy. But the more CPU-bound you have in your services, the more likely you're going to benefit from running it with PyPy.

from nameko.