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Add Dependabot auto-merge workflow #318

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Merged
hzhangxyz merged 2 commits into from
Apr 9, 2026
Merged

Add Dependabot auto-merge workflow #318

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Copilot Apr 9, 2026
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Add Dependabot auto-merge workflow
Copilot Apr 9, 2026
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19 changes: 19 additions & 0 deletions .github/workflows/dependabot.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
name: dependabot
permissions:
contents: write
pull-requests: write

on:
- pull_request
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Copilot AI Apr 9, 2026

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on: pull_request without specifying types runs on all PR activity (including closed). Dependabot can close its own PRs (e.g., superseded updates), and gh pr merge --auto will fail/no-op on closed PRs, creating noisy failing workflow runs. Consider restricting trigger types (e.g., opened, reopened, synchronize, ready_for_review) and/or adding an if: guard that the PR state is open.

Suggested change
- pull_request
pull_request:
types:
- opened
- reopened
- synchronize
- ready_for_review

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jobs:
dependabot:
runs-on: ubuntu-latest
if: github.actor == 'dependabot[bot]'
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The job gating uses github.actor == 'dependabot[bot]', which depends on who triggered the event rather than who owns the PR. If a Dependabot-authored PR is updated or re-run by a maintainer, github.actor may no longer be dependabot[bot], and auto-merge won’t be (re)enabled. Prefer checking the PR author instead (e.g., github.event.pull_request.user.login == 'dependabot[bot]').

Suggested change
if: github.actor == 'dependabot[bot]'
if: github.event.pull_request.user.login == 'dependabot[bot]'

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steps:
- name: auto-merge
run: gh pr merge --auto --squash "$PR_URL"
env:
PR_URL: ${{ github.event.pull_request.html_url }}
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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