ci: Support Python 3.13

[dangotbanned]

Resolves #3587

Minimal/fallback support for 3.13.

Ideally I'd like to minimise hard dependencies we have on typing_extensions before October 2024. However, this would be the simpler option if it passes CI

• WHL: Python 3.13 pyproj4/pyproj#1439
• [Python][Packaging] Support Python 3.13 and upload wheels apache/arrow#43519
• WIP: [Release] Verify release-18.0.0-rc0 apache/arrow#44440

[mattijn]

I think it is noble to wait for support for python 3.13 for all our upstream soft dependencies. But I'm also not against releasing before all our soft dependencies provide support (in my understanding pyarrow). What you think @dangotbanned?

[dangotbanned]

I think it is noble to wait for support for python 3.13 for all our upstream soft dependencies. But I'm also not against releasing before all our soft dependencies provide support (in my understanding pyarrow). What you think @dangotbanned?

@mattijn nothing noble here 😄

I'm happy with releasing before pyarrow>=18.0.0 in principle.
The issue is we'd need to remove pyarrow from altair[all] (https://github.com/vega/altair/actions/runs/11448782729/job/31853033909?pr=3591)

Also maybe do some decoupling in tests/., if there are any imports that assume pyarrow is always installed.

Doing either of those is fine with me if you'd like to give it a try?

---

Personally though, I've got a few issues/PRs that I'd rather have ready for 5.5.0 (+ some others that are less pressing):

• Wide support for datetime.(date|datetime) #3650
  • feat: Support datetime.(date|datetime) in Expression(s) #3654
• docs: Promote when-then-otherwise in User Guide #3544
• Improvements to alt.themes #3519
  • docs: Add ThemeConfig section to User Guide #3645
  • refactor: alt.themes -> alt.theme #3618
  • PluginRegistry persists unregistered plugins #3619
  • Make it easier for downstream libraries to *safely* contribute themes #3586
• Update Chart.transform_filter() to mirror alt.when() #3657

I think there's more value in delivering some/all of these vs a slightly earlier 5.5.0, if that makes sense?

[mattijn]

Hmpf. Decoupling altair[all] is not something I was aiming for. Let's wait.

[dangotbanned]

Hmpf. Decoupling altair[all] is not something I was aiming for. Let's wait.

No worries @mattijn

Also, IIRC pyarrow was blocking for geopandas - which I think is relevant to you?

[mattijn]

Yeah, I assume that geospatial users of Altair are the minority, so if that's causing the delay, also feel a bit responsible for that.

[dangotbanned]

Yeah, I assume that geospatial users of Altair are the minority, so if that's causing the delay, also feel a bit responsible for that.

Its not on you @mattijn!
just giving you a heads up if you were eager to use 3.13 is all

[dangotbanned]

I'm all out of ideas on this one 😞

@mattijn @jonmmease @joelostblom @binste
Pinging in case any of you guys can make sense of the logs