Installation fails on Python 3.13

[veenstrajelmer]

Zarr version

latest

Numcodecs version

latest

Python Version

3.13

Operating System

Windows

Installation

pip install zarr

Description

Installation fails

Steps to reproduce

pip install zarr in a Python 3.13 environment

Additional output

Also reported at numcodecs: zarr-developers/numcodecs#593

[TomAugspurger]

Do you get any zarr specific output, or is the failure when building numcodecs?

[veenstrajelmer]

The entire traceback is included in the linked numcodecs issue. I did not test beyond numcodecs, so I am not sure whether there will be a zarr-specific problem after this is resolved. However, since zarr cannot be installed because of this I thought it would be useful to have a zarr issue also.

I guess it would also be useful to add py 3.13 to the ci workflow and the supported python versions in pyproject.toml

[dstansby]

This is probably because we need to do a new numcodecs release. Any zarr developers that are keen to see this fixed, please review PRs at https://github.com/zarr-developers/numcodecs/milestone/11!

[d-v-b]

I approved those PRs, feel free to update the release notes as you see fit

[veenstrajelmer]

@TomAugspurger After the release of numcodecs 0.13.1, pip install zarr works again. I would like to suggest to add python 3.13 to the ci and supported versions, but feel free to close this issue you think otherwise.

[TomAugspurger]

Thanks. Let's keep this open for those tasks.

[jhamman]

I think we can close this following #2344.