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ci: pin runner images to ubuntu-24.04, macos-26, windows-2025 - #768

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bhimrazy wants to merge 4 commits into
Lightning-AI:mainfrom
bhimrazy:ci/pin-runner-images
Closed

bhimrazy wants to merge 4 commits into
Lightning-AI:mainfrom
bhimrazy:ci/pin-runner-images

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@bhimrazy

@bhimrazy bhimrazy commented Oct 5, 2026 •

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What does this PR do?

Moves the remaining floating and retiring runner labels to pinned images, and aligns everything on ubuntu-24.04, macos-26, windows-2025 (ci-testing.yml already had windows-2025).

  • ci-checks.yml: ubuntu-latest/macos-latest/windows-latest → ubuntu-24.04/macos-26/windows-2025

  • ci-testing.yml: macos-15 → macos-26, and the "oldest requirements" leg moves from ubuntu-22.04 to ubuntu-24.04. Since that leg now shares an OS with the base matrix, requires: ["latest"] is added to the base matrix so it stays a separate job instead of replacing the 3.10 "latest" run (same pattern as Lightning-AI/utilities). Job count is unchanged (12 + 1).

  • pyproject.toml: pyzmq>=22.0.0 → >=22.2.1. The oldest-requirements leg pins the floor, and 22.0.0 has no Python 3.10 wheels, so on 24.04 it builds from source and fails with GCC 13. 22.2.1 is the first release with cp310 wheels.

Why

@codecov-commenter

codecov-commenter commented Oct 5, 2026 •

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⚠️ Please install the 'codecov app svg image' to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85%. Comparing base (7427100) to head (f6e1911).
⚠️ Report is 2 commits behind head on main.
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files
@@         Coverage Diff         @@
##           main   #768   +/-   ##
===================================
- Coverage    85%    85%   -0%     
===================================
  Files        40     40           
  Lines      3299   3299           
===================================
- Hits       2797   2796    -1     
- Misses      502    503    +1     
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

… 3.10 wheels

The oldest-requirements CI leg pins pyzmq to its declared minimum. pyzmq
22.0.0 ships no wheels for Python 3.10+, so it is built from source, and
its bundled libzmq fails to compile against GCC 13's libstdc++ on
ubuntu-24.04 (static assertion in allocator_traits for secure_allocator_t).
22.2.1 is the first pyzmq release with cp310 wheels for Linux, macOS and
Windows, so it is the lowest version installable on LitServe's minimum
supported Python without a compiler.
@bhimrazy

bhimrazy commented Oct 5, 2026

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Closing in favor of a stacked PR series; the new PRs will be linked here.

@bhimrazy bhimrazy closed this Oct 5, 2026
@bhimrazy

bhimrazy commented Oct 5, 2026

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Superseded by #774 (part of a stacked PR series: #772 → #773 → #774 → #775).

@bhimrazy
bhimrazy deleted the ci/pin-runner-images branch October 5, 2026 17:12
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