Python versions

[dylanmcreynolds]

This PR updates the minimum version of python to 3.9. Additionally, it changes the gh action to test 3.9, 3.10 and 3.11.

Along the way, this converts the installation use pyproject.toml

[LAShemilt]

Love the change to pyproject.toml, much easier to manage. However tests are breaking due to _version.py being changed.

I think all it takes is to update the contents of the pyscicat/__init__.py file which is currently:

from ._version import get_versions

__version__ = get_versions()["version"]
del get_versions

to just

import ._version

[bpedersen2]

Generally fine and a good idea.

[bpedersen2]

This should not get checked in at all, instead add it to .gitignore.

[dylanmcreynolds]

Thanks, fixed

[bpedersen2]

I would keep a setup.py with just a setup() call.

[dylanmcreynolds]

Is that in case people are installing with old versions of pip?

[bpedersen2]

Yes, not only pip, but see https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html

[bpedersen2]

LGTM

[bpedersen2]

The test somehow believes we want python 3.1, which is wrong. I guess the versions in the matrix need quoting, otherwise they are treated as float, giving that result.

[dylanmcreynolds]

That was painful. Apologies if I just blasted you with notification emails. But I got the build to run with these new changes.

[LAShemilt]

LGTM , happy to merge