Solara fails to import with Python 3.13 on Windows

[EwoutH]

When we were updating our CI setup (projectmesa/mesa#2325) we noticed that the Windows build threw some errors:

ERROR tests/test_cell_space.py - AttributeError: module 'solara' has no attribute 'component'.
ERROR tests/test_devs.py - AttributeError: module 'solara' has no attribute 'component'.
ERROR tests/test_solara_viz.py - AttributeError: module 'solara' has no attribute 'reactive'.
!!!!!!!!!!!!!!!!!!! Interrupted: 3 errors during collection !!!!!!!!!!!!!!!!!!!

Both Python 3.13 on macOS and Ubuntu and Python 3.12 on Windows run fine, it's only Python 3.13 on Windows that gives the errors.

Since the pip install step takes a lot longer, it could be that either Solara or a dependency of Solara is being build manually on Python 3.13 Windows instead of using a wheel, which could be causing the problems.

The Python 3.13.0 stable release is this Tuesday (2024-10-01), it might be nice if everything runs smoothly on stable release.

[EwoutH]

Issue reproduced on Solara's own CI: https://github.com/widgetti/solara/actions/runs/11027367292/job/30625621676?pr=798

ERROR: Cannot install jupyter-client because these package versions have conflicting dependencies.

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

It seems like a relatively straightforward dependency conflict that just needs to be resolved.

[EwoutH]

Hi @maartenbreddels and @iisakkirotko! Python 3.12 stable is releasing in 5 days, any chance these issues can be given some priority? See also:

• CI: Test with Python 3.13 #798

[iisakkirotko]

Hi @EwoutH! Unfortunately I'm at a conference for this week, so I won't be able to take a look at this before Monday. I do hope to work on it as soon as I'm back at the office, unless Maarten gets to it before I do.

[EwoutH]

Thanks for getting back.

Today is 3.13 release day, so if you have a chance, that would be appreciated!

[iisakkirotko]

Hi again @EwoutH! I had a look at this yesterday, and made some improvements to hopefully speed the support along (see #804). The core functionality seems work properly, but installing solara[all] will still fail (more on that below). Note that this would put you on jupyterlab==2.3.2.

For full support, I think we have to wait for vaex to support Python 3.13, as well as microsoft/playwright-python#2565, apache/arrow#43519, and openai/tiktoken#346 to be released. To use a modern version of Jupyterlab on windows, we need to wait for pywin32 to support python 3.13 (see mhammond/pywin32#2367).

[iisakkirotko]

Hey @EwoutH, it looks like as of last week with the release of pyarrow 18.1.0, all of these issues should be fixe. Could you verify that everything works as expected? Should also work with recent Jupyterlab versions.