Enforce minimum Python version

[gy-mate]

Description

If the requires-python Trove classifier in pyproject.toml is ignored and package is ran with Python <3.12, the following error occurs at the end of the process:

Reported by @TancsicsGergely on Discord

Version

2.0.2

Preferred solution

Build backends (pipx and shiv uses setuptools) should fail when building moodle-to-vikwikiquiz with a Python version that doesn't meet the requires-python Trove classifier.

Related: pypa/pipx#387

To implement this, submitting a PEP was hinted at by a CPython developer. The steps for this are:

• Check if an issue was opened previously in the CPython GitHub repo
• Post the idea to https://discuss.python.org/c/packaging/14
• If it meets support, comment the draft PEP under the post
• If it still meets support, ask someone to sponsor the PEP
• If the sponsor finds the PEP ready, submit it
• Discuss it
• Wait for a decision

Alternatives considered

Using sys.version_info to check the interpreter version. I think this isn't a good idea because it would require updating the minimum Python version in two separate files.