distuitils Version classes are deprecated

[Samreay]

Hi @smarie!

Looks like a fairly simple change, but right now Im getting a ton of deprecation warnings:

generating gallery for /home/runner/work/ChainConsumer/ChainConsumer/docs/generated/gallery... :  80%|████████  | 4/5 [00:26<00:05,  5.45s/it]INFO    -  DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.
  File "/home/runner/work/ChainConsumer/ChainConsumer/.venv/lib/python3.10/site-packages/mkdocs_gallery/py_source_parser.py", line 109, in _get_docstring_and_rest
    if LooseVersion(sys.version) >= LooseVersion("3.7"):
  File "/home/runner/work/ChainConsumer/ChainConsumer/.venv/lib/python3.10/site-packages/setuptools/_distutils/version.py", line 55, in __init__
    warnings.warn(

Which boil down to:

DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.

Hopefully the fix is a simple swap here:

mkdocs-gallery/src/mkdocs_gallery/py_source_parser.py

Line 16 in 89fea9e

from distutils.version import LooseVersion

From

from distutils.version import LooseVersion

to

from packaging.version import Version

And then updating

    if LooseVersion(sys.version) >= LooseVersion("3.7"):

I believe you could also make use of from packaging.version import parse if you wanted too.

[smarie]

Thanks @Samreay ! Indeed this is the correct fix. Also there is a need to update the install_requires as shown here : https://github.com/smarie/python-pytest-cases/pull/312/files

Do you feel like opening a PR ?

[Samreay]

@smarie sure thing. Three new PRs now in your inbox awaiting your thoughts