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TST: upgrade Stable CI jobs to CPython 3.13#19436

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neutrinoceros wants to merge 1 commit intoastropy:mainfrom
neutrinoceros:tst/cp313-stable-testing
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TST: upgrade Stable CI jobs to CPython 3.13#19436
neutrinoceros wants to merge 1 commit intoastropy:mainfrom
neutrinoceros:tst/cp313-stable-testing

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This seems overdue. Last time I checked, we did this once a year and at the same time as we bumped our minimal requirement on Python itself, but I think this approach isn't appropriate now that astropy is abi3-compliant and there's much less of a motivation for aggressively bumping the requirement. Meanwhile, CPython 3.13 has been stable for almost 18 months now, so I think it's very safe to use it as our primary version in CI.

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@neutrinoceros neutrinoceros added this to the v8.0.0 milestone Mar 16, 2026
@neutrinoceros neutrinoceros added testing no-changelog-entry-needed dependencies Pull requests that update a dependency file labels Mar 16, 2026
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Thank you for your contribution to Astropy! 🌌 This checklist is meant to remind the package maintainers who will review this pull request of some common things to look for.

  • Do the proposed changes actually accomplish desired goals?
  • Do the proposed changes follow the Astropy coding guidelines?
  • Are tests added/updated as required? If so, do they follow the Astropy testing guidelines?
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  • Is a change log needed? If yes, did the change log check pass? If no, add the "no-changelog-entry-needed" label. If this is a manual backport, use the "skip-changelog-checks" label unless special changelog handling is necessary.
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@neutrinoceros neutrinoceros marked this pull request as ready for review March 16, 2026 12:58
@neutrinoceros neutrinoceros requested a review from pllim March 16, 2026 12:58
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pllim commented Mar 16, 2026

Yeah... but as you can see in the CI listing, it messes up with everyone else because we have to update the branch protection rules and ask everyone to rebase. Unless not upgrading is going to break something, I'd rather wait for when we bump Python or at least during a quiet time when we don't get so many PRs from GSoC hopefuls.

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Good point, I didn't consider the context. It felt like a good time to me because I disabled most notifications from misc activity, but this can definitely wait for GSoC season to die off.

@neutrinoceros neutrinoceros marked this pull request as draft March 16, 2026 17:05
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