Unable to use on OSX

[robvanmieghem]

What was wrong?

import libp2p
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/rob/workspace/github.com/libp2p/py-libp2p/libp2p/__init__.py", line 3, in <module>
    from libp2p.host.basic_host import BasicHost
  File "/Users/rob/workspace/github.com/libp2p/py-libp2p/libp2p/host/basic_host.py", line 5, in <module>
    from async_service import background_trio_service
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/async_service/__init__.py", line 1, in <module>
    from .abc import ManagerAPI, ServiceAPI  # noqa: F401
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/async_service/abc.py", line 4, in <module>
    import trio_typing
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/trio_typing/__init__.py", line 6, in <module>
    import trio as _trio
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/trio/__init__.py", line 18, in <module>
    from ._core import (
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/trio/_core/__init__.py", line 27, in <module>
    from ._run import (
  File "/Users/rob/Library/Caches/pypoetry/virtualenvs/js-sdk-Dbu3Jec3-py3.8/lib/python3.8/site-packages/trio/_core/_run.py", line 2325, in <module>
    raise NotImplementedError("unsupported platform")
NotImplementedError: unsupported platform

Environment

macOS Catalina
python 3.8

[ShadowJonathan]

Looks like trio doesn't run on your platform, and this snippet is causing the issue:

if sys.platform == "win32":
    from ._io_windows import WindowsIOManager as TheIOManager
    from ._generated_io_windows import *
elif sys.platform == "linux" or (not TYPE_CHECKING and hasattr(select, "epoll")):
    from ._io_epoll import EpollIOManager as TheIOManager
    from ._generated_io_epoll import *
elif TYPE_CHECKING or hasattr(select, "kqueue"):
    from ._io_kqueue import KqueueIOManager as TheIOManager
    from ._generated_io_kqueue import *
else:  # pragma: no cover
    raise NotImplementedError("unsupported platform")