Timeout decorator is no longer working with python 3.8

[vacary]

Timeout decorator is no longer working with python 3.8. It seems that there is an issue with the name of the function from
Caller._internal_call to __main__.Caller._internal_call

It is perhaps related to if __name__ == '__main__':

Traceback (most recent call last):
  File "/Users/acary/Work/faf/src/comp.py", line 221, in __call__
    self._internal_call(solver, sproblem, filename, pfilename,
  File "/Users/acary/Work/faf/src/faf_timeout.py", line 40, in inner
    proc.start()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/context.py", line 284, in _Popen
    return Popen(process_obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_fork.py", line 19, in __init__
    self._launch(process_obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/popen_spawn_posix.py", line 47, in _launch
    reduction.dump(process_obj, fp)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
_pickle.PicklingError: Can't pickle <function Caller._internal_call at 0x1120e6f70>: it's not the same object as __main__.Caller._internal_call

[vacary]

Another example that seems related
https://stackoverflow.com/questions/50079165/multiprocessing-picklingerror-in-python-3-6-5-that-doesnt-occur-in-3-6-1/50079674#50079674

[vacary]

it works in python 3.7 :-(

[vacary]

Answer seems to be
https://chrissardegna.com/blog/multiprocessing-changes-python-3-8/

[vacary]

Temporary fix in 888da84