Add support for Python 3.13

[aktech]

Python 3.13 was released on October 7, 2024. It would be great to have support for Python 3.13.

We use conda-project in jhub-apps and conda-project's lack of 3.13 support is preventing us from supporting 3.13 for jhub-apps.

[AlbertDeFusco]

I'll add to the test matrix

[AlbertDeFusco]

Actually, I'm not certain I understand your request. As far as I can tell Python 3.13 is not supported as a conda base env. Is that what you need for jhub-apps?

This will not solve today, and I think this is the conda PR to follow: conda/conda#14187

❯ conda create --dry-run python=3.13 conda

[AlbertDeFusco]

I see. You're using micromamba. I'll add tests with micromamba and if things look ok with Python 3.13 I'll patch the package on conda-forge

[AlbertDeFusco]

Wait! micromamba won't add an executable called conda. I'm more confused now. Could you help me understand how jhub-apps wants to use conda-project? And if you're using micromamba how do tests pass for Python <3.13?

[aktech]

We use conda-project's python interface to parse conda-project.yml file to fetch meta data to create apps:
Example file https://github.com/nebari-dev/jhub-apps-from-git-repo-example/blob/main/conda-project.yml

https://github.com/nebari-dev/jhub-apps/blob/badcc92464d2526650059a7d505edc0e5133d787/jhub_apps/service/app_from_git.py#L100

And if you're using micromamba how do tests pass for Python <3.13?

Yes we use micromamba to install python environment in the CI including dependencies like conda-project, since conda-project python package works in python <3.13, it works fine for us so far.

We plan to use conda-project more extensively in jhub-apps in future, like using the command feature, environment creation but not at the moment.