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ci: drop macOS, single-OS fixtures, manual-only aux checks - #21

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@ShahriarAhnaf ShahriarAhnaf commented Sep 25, 2026 •

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What this removes

  • macOS leg in ci (test matrix): was ubuntu-latest + macos-latest on push/main/tag/ready-PR, Linux-only on draft PRs. Now unconditionally ubuntu-latest. The SDK is pure Python, so macOS proved little Linux doesn't, at 10x the billing rate.
  • No sim-fixtures / OS-matrix concern here (pippy has no simulator binary dependency, tests are pure-Python against literal JSON fixtures).
  • No standalone "just checks" found: test → build → publish is a single linear gate; nothing to move to workflow_dispatch.

Before/after estimate

Small in absolute terms: 2 Python versions x macOS, ~15 sec wall each, over ~12 September runs = ~24 legs x 0.25 min x 10x multiplier ≈ 60 billable minutes/month removed. Low-cost repo, included for consistency with the org-wide macOS policy.

Branch protection / required checks

gh api repos/simantic-dev/pippy/branches/main/protection → 404 "Branch not protected". No rulesets with required status checks. No required-check conflict.

Actual September billing (GitHub billing usage API, verified): 12 macOS 3-core minutes in this repo = $0.74 gross at $0.062/min. The minute estimates above were sampled and overstated; this is the real number.

🤖 Generated with Claude Code

macOS legs run at a 10x billing multiplier vs Linux and are tested locally
per project convention; this repo's own workflow comments already measured
them as the dominant share of CI cost (simantic-core: 588/2712 billed
minutes over a 3-week sample, ~75% of cost; org-wide: ~18% of CI minutes,
~70% of the bill). Removes the conditional draft/non-draft matrix split
that existed only to gate the macOS leg, since the Linux legs run
unconditionally either way.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@ShahriarAhnaf
ShahriarAhnaf marked this pull request as ready for review September 25, 2026 21:03

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