TypeError: split_at() got an unexpected keyword argument 'maxsplit'

Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/localdata/some_user/src/test_utils/venv/lib/python3.8/site-packages/pip-run.py", line 4, in <module>
    __name__ == '__main__' and run()
  File "/localdata/some_user/src/test_utils/venv/lib/python3.8/site-packages/pip_run/__init__.py", line 15, in run
    pip_args, params = commands.parse_script_args(args)
  File "/localdata/some_user/src/test_utils/venv/lib/python3.8/site-packages/pip_run/commands.py", line 58, in parse_script_args
    return _separate_dash(args)
  File "/localdata/some_user/src/test_utils/venv/lib/python3.8/site-packages/pip_run/commands.py", line 48, in _separate_dash
    pre, post = split_at(args, '--'.__eq__, maxsplit=1)
TypeError: split_at() got an unexpected keyword argument 'maxsplit'

The maxsplit keyword argument for split_at was only introduced from version 8.3.0 of more-itertools

Since there is no minimum version specified in https://github.com/jaraco/pip-run/blob/c72c1dd41e29b82d8ed05e38cea4b43a4b42c07a/setup.cfg#L26

Then if the users environment already contains this module at a lower version, then they will encounter the error above

Suggest the requirement be updated to more_itertools>=8.3.0?

To replicate (Python3.8):

virtualenv venv -p python3 && source ./venv/bin/activate
pip install more_itertools==8.2.0
pip install pip-run
python3 -m pip-run some_url -- -m some_module
...
TypeError: split_at() got an unexpected keyword argument 'maxsplit'

jaraco / pip-run

TypeError: split_at() got an unexpected keyword argument 'maxsplit' #62