pypy doesn't support gevent/eventlet, as far as I know. :( Not yet, indeed. But according to their site they do have a stackless version: "PyPy can be configur

pypy doesn't support gevent/eventlet, as far as I know. :( Not yet, indeed. But according to their site they do have a stackless version: "PyPy can be configured to run in stackless mode, providing micro-threads for massive concurrency". This sounds promising, and could be used to implement gevent.