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.github/workflows/backport.yml

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+on:
+  pull_request:
+    types: [closed]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  backport:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-slim
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: ./.github/actions/setup-nodejs
+        with:
+          build-command: ''
+          install-command: npm install --prefix=.github/scripts --no-package-lock
+
+      - name: Compute backport targets
+        id: targets
+        run: node .github/scripts/compute-backport-targets.mjs
+
+      - name: Backport
+        if: steps.targets.outputs.target_branches != ''
+        uses: korthout/backport-action@c656f5d5851037b2b38fb5db2691a03fa229e3b2 # v4.0.1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          source_pr_number: ${{ github.event.pull_request.number }}
+          target_branches: ${{ steps.targets.outputs.target_branches }}
+          pull_description: |-
+            # Description
+            Backport of #${pull_number} to `${target_branch}`
+
+            # Original description
+
+            ${pull_description}
+          pull_title: ${pull_title} (backport to ${target_branch})
+          add_author_as_assignee: true
+          copy_assignees: true
+          copy_requested_reviewers: true
+          copy_labels_pattern: '^(?!Backport to\b).+' # Copy everything except backport labels
+          experimental: >
+            {
+              "conflict_resolution": "draft_commit_conflicts"
+            }