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Move iOS CI runners off macos-14 image #153631

Description

@freakboy3742

Feature or enhancement

Proposal:

#145098 updated the GitHub Actions configurations to use macos-26 images for macOS jobs. Updating iOS to use macos-26 was deferred at the time because of issues with the stability of iOS on GitHub Actions (actions/runner-images#12777). iOS jobs remain on macos-14.

However, deprecation of the macos-14 runner has begun (actions/runner-images#13518), with the image being unsupported by November 2 2026. We need to move off the macos-14 image by then.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

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  1. self-assigned this
    on Jul 12, 2026
  2. added
    type-featureA feature request or enhancement
    3.13only security fixes
    3.14bugs and security fixes
    3.15bugs and security fixes
    3.16new features, bugs and security fixes
    on Jul 12, 2026
  3. added
    infraCI, GitHub Actions, buildbots, Dependabot, etc.
    on Jul 13, 2026
  4. added 2 commits that reference this issue on Jul 13, 2026
  5. added a commit that references this issue on Jul 14, 2026
  6. freakboy3742 commented on Jul 14, 2026

    @freakboy3742
    ContributorAuthor

    Marking this as closed; the 3.13 backport will be a useful bug fix for others, but doesn't strictly include a CI component from CPython's perspective.

  7. added a commit that references this issue on Jul 14, 2026
  8. added 2 commits that reference this issue on Oct 2, 2026
  9. added a commit that references this issue on Oct 12, 2026
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3.13only security fixes3.14bugs and security fixes3.15bugs and security fixes3.16new features, bugs and security fixesOS-iosinfraCI, GitHub Actions, buildbots, Dependabot, etc.type-featureA feature request or enhancement

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