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fix(hybrid-gate): key the concurrency group by SHA on push #32

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Merged
forkwright merged 1 commit into from
Aug 12, 2026
Merged

fix(hybrid-gate): key the concurrency group by SHA on push #32

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14 changes: 13 additions & 1 deletion .github/workflows/hybrid-gate.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -134,8 +134,20 @@ env:
# caller's context in a reusable call) and repo-scoped, so each adopting repo
# cancels only its own superseded PR runs. Callers must NOT also set a
# concurrency group with this key, or the shared group self-cancels.
#
# WHY the SHA on a push: on a default branch the ref is CONSTANT, so a ref-keyed
# group made every merge cancel the previous commit's gate. Measured in aletheia
# over one window, two consecutive merges each lost their verdict entirely --
# 53ba8110b and 8dd94b02c, where the caller's own jobs went green and every job
# defined here was cancelled. The split fell exactly on the caller/callee
# boundary, because the caller had already SHA-keyed its pushes for this reason
# and this group had not. Worse than a missing verdict: `Evaluate gate result`
# fails on a cancelled upstream, so the commit reports RED with nothing wrong,
# which teaches people to discount red on a default branch.
#
# PRs keep ref-keying, so a force-push still supersedes its own in-flight run.
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.sha || github.ref }}
cancel-in-progress: true

jobs:
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