Runtimes
By default, Pykka builds on top of Python’s regular threading concurrency
model, via the standard library modules threading and queue.
Pykka 2 and earlier shipped with some alternative implementations that ran on
top of gevent or eventlet. These alternative implementations
were removed in Pykka 3.
Note that Pykka does no attempt at supporting a mix of concurrency runtimes. Such a future feature has briefly been discussed in issue #11.