Deprecation warning when installing with latest version of pip

[rez10191]

First of all: thanks for this library; it's really well done and useful.

When using pip 22.3 and setuptools 65.5.0 under python 3.8.10 in a new virtual environment, I see the following deprecation warning when installing simplekml:

DEPRECATION: simplekml is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at https://github.com/pypa/pip/issues/8559

Looks like this won't be an active problem until April of 2023, but I wanted to make you aware.

Thanks!

[Nodd]

FYI you can use setuptools-py2cfg to generate a setup.cfg from setup.py, it works great. You can then use ini2toml to generate a pyproject.toml from setup.cfg, it works fine too but the resulting file could maybe be simplified.
I can send a PR, but I don't know what workflow is used to send files to pypi so I can't tell which solution is better.

[AaronDMarasco]

With Python 3.10 and whatever versions of setuptools/wheel/etc. that I have, this has now been promoted to "fully broken." Thanks @rez10191 for the --use-pep517 flag; we'll see how long that lasts.

@eisoldt has no repo activity since 12/22. Maybe it's time to fork and rename with the two existing very-reasonable looking PRs.

Some things people might find with internet searches:

metadata-generation-failed
Failed building wheel for simplekml
Your build configuration is incomplete and previously worked by accident!
Invalid dash-separated options
invalid command 'bdist_wheel'
invalid command 'egg_info'

Edit: If somebody does spin off, there are also PRs in tjlang/simplekml which is confusing; it looks like they may have cloned from old code.google so it doesn't show up as a fork here...