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fix(ci): use github.event.before for push diff, fetch-depth 0

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HEAD~1 doesn't work for merge commits. Use github.event.before (the
previous main tip) for push events and github.event.pull_request.base.sha
for PRs. fetch-depth: 0 ensures both SHAs are available.

Fallback: if BASE is empty (new branch), run all jobs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Hongming Wang 2026-04-17 20:23:28 -07:00
parent ee8b8af962
commit e093f121f0
1 changed files with 17 additions and 2 deletions
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19
.github/workflows/ci.yml vendored
View File

@ -21,10 +21,25 @@ jobs:
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 2
fetch-depth: 0
- id: check
run: |
DIFF=$(git diff --name-only HEAD~1 HEAD 2>/dev/null || echo ".github/workflows/ci.yml")
# For push events: diff against previous commit (handles merge commits)
# For PR events: diff against the base branch
if [ "${{ github.event_name }}" = "pull_request" ]; then
BASE="${{ github.event.pull_request.base.sha }}"
else
BASE="${{ github.event.before }}"
fi
# Fallback: if BASE is empty or all zeros (new branch), run everything
if [ -z "$BASE" ] || echo "$BASE" | grep -qE '^0+$'; then
echo "platform=true" >> "$GITHUB_OUTPUT"
echo "canvas=true" >> "$GITHUB_OUTPUT"
echo "python=true" >> "$GITHUB_OUTPUT"
echo "scripts=true" >> "$GITHUB_OUTPUT"
exit 0
fi
DIFF=$(git diff --name-only "$BASE" HEAD 2>/dev/null || echo ".github/workflows/ci.yml")
echo "platform=$(echo "$DIFF" | grep -qE '^platform/|^\.github/workflows/ci\.yml$' && echo true || echo false)" >> "$GITHUB_OUTPUT"
echo "canvas=$(echo "$DIFF" | grep -qE '^canvas/|^\.github/workflows/ci\.yml$' && echo true || echo false)" >> "$GITHUB_OUTPUT"
echo "python=$(echo "$DIFF" | grep -qE '^workspace-template/|^\.github/workflows/ci\.yml$' && echo true || echo false)" >> "$GITHUB_OUTPUT"