fix: tests on MacOS 13.3.1 (a) (22E772610a)

[metaist]

Although this is isn't one of my preferred platforms, it'd be nice to let people know what's happening.

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/opt/homebrew/Cellar/[email protected]/3.10.6_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 116, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "/opt/homebrew/Cellar/[email protected]/3.10.6_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 126, in _main
    self = reduction.pickle.load(from_parent)
  File "/ezq/src/ezq/__init__.py", line 197, in __getattr__
    return getattr(self.q, name)
  File "/ezq/src/ezq/__init__.py", line 197, in __getattr__
    return getattr(self.q, name)
  File "/ezq/src/ezq/__init__.py", line 197, in __getattr__
    return getattr(self.q, name)
  [Previous line repeated 993 more times]
RecursionError: maximum recursion depth exceeded in comparison

[metaist]

FAILED test/test_ezq.py::test_run_processes - AssertionError: expect sum of 499500 from processes
FAILED test/test_ezq.py::test_map - AttributeError: Can't pickle local object 'map.<locals>.worker'
FAILED test/test_iter.py::test_iter_q - NotImplementedError

[metaist]

Ok, well the NotImplementedError comes from here:

# multiprocessing.queues.Queue
def qsize(self):
        # Raises NotImplementedError on Mac OSX because of broken sem_getvalue()

[metaist]

Oh, goodness. https://stackoverflow.com/questions/67796535/why-multiprocess-works-differently-in-ubuntu-vs-macos

[metaist]

For future reference, see the relevant python docs:

Changed in version 3.8: On macOS, the spawn start method is now the default. The fork start method should be considered unsafe as it can lead to crashes of the subprocess. See bpo-33725.

This created a whole new set of problems which is why I ultimately adopted multiprocess over multiprocessing.