Drop the retired macos-13 (Intel) runner from CI - #8
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GitHub has retired the macos-13 (Intel) hosted runners. The matrix still requested them, so those two jobs never got a runner — they sat queued for hours (one PR run was queued 11h+), and every CI run therefore never reached overall success: PR runs hung, and main-push runs were cancelled by the next push's concurrency group before the phantom jobs resolved. This executes the transition docs/release.md already planned for: CI is now Apple Silicon only (macos-14) alongside Windows and Ubuntu across py3.11/3.12 — the six jobs that already pass. Intel-Mac coverage moves to the manual pre-release test plan, which is filled in (it was a TODO). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Problem
GitHub has retired the
macos-13(Intel) hosted runners, but the CI matrix still requested them. Those two jobs never got a runner:main-push runs showedcancelled(each merge'scancel-in-progressconcurrency group superseded the previous run before the stuck jobs resolved).Fix
Execute the transition
docs/release.mdalready documented ("when GitHub announces deprecation, CI goes Apple Silicon only and Intel coverage moves to a manual plan"):.github/workflows/ci.yml— dropmacos-13from the matrix. CI is now Apple Silicon (macos-14) + Windows + Ubuntu across py3.11/3.12 — the six jobs that already pass. The system-deps step keys offrunner.os(macOS for both 13/14), so nothing else changes.docs/release.md— fill in the previously-TODOmanual Intel-Mac test plan (clean venv install per developer.md, run pytest, launch + solve + export a build sheet on an Intel Mac before a release).Result
Every CI run should now actually complete green instead of hanging on runners that no longer exist — this PR's own run is the first test of that.
🤖 Generated with Claude Code