GitHub Actions: macOS 13 runner image is closing down

[QJKX]

On December 4th.

https://github.blog/changelog/2025-09-19-github-actions-macos-13-runner-image-is-closing-down/

#3436

[ann0see]

Thanks for notifying us. We did indeed get an E-Mail that the runner is soon being disabled. The question is how we handle the legacy build. Qt 5 is still needed - there are some bad bugs in Qt6 (e.g. broken accessability).

[pljones]

---

https://github.com/jamulussoftware/jamulus/actions/runs/20408124007/job/58640910634

Annotations

• 1 error and 1 notice
  The macOS-13 based runner images are now retired. For more details, see [macOS] The macOS 13 Ventura based runner images will begin deprecation on September 22nd and will be fully unsupported by December 4th for GitHub and ADO actions/runner-images#13046.
• The macOS-13 based runner images are being deprecated, consider switching to macOS-15 (macos-15-intel) or macOS 15 arm64 (macos-latest) instead. For more details see [macOS] The macOS 13 Ventura based runner images will begin deprecation on September 22nd and will be fully unsupported by December 4th for GitHub and ADO actions/runner-images#13046

---

Guess we either stop building or move. This breaks the release process.

[ann0see]

Absolute worst case, I can try to build with qt5 installed via brew locally on macOS