tjh.dev
1# WARNING:
2# When extending this action, be aware that $GITHUB_TOKEN allows write access to
3# the GitHub repository. This means that it should not evaluate user input in a
4# way that allows code injection.
5
6name: Backport
7
8on:
9 pull_request_target:
10 types: [closed, labeled]
11
12permissions:
13 contents: read
14 issues: write
15 pull-requests: write
16
17defaults:
18 run:
19 shell: bash
20
21jobs:
22 backport:
23 name: Backport Pull Request
24 if: vars.NIXPKGS_CI_APP_ID && github.event.pull_request.merged == true && (github.event.action != 'labeled' || startsWith(github.event.label.name, 'backport'))
25 runs-on: ubuntu-24.04-arm
26 steps:
27 # Use a GitHub App to create the PR so that CI gets triggered
28 # The App is scoped to Repository > Contents and Pull Requests: write for Nixpkgs
29 - uses: actions/create-github-app-token@df432ceedc7162793a195dd1713ff69aefc7379e # v2.0.6
30 id: app-token
31 with:
32 app-id: ${{ vars.NIXPKGS_CI_APP_ID }}
33 private-key: ${{ secrets.NIXPKGS_CI_APP_PRIVATE_KEY }}
34 permission-contents: write
35 permission-pull-requests: write
36
37 - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
38 with:
39 ref: ${{ github.event.pull_request.head.sha }}
40 token: ${{ steps.app-token.outputs.token }}
41
42 - name: Log current API rate limits
43 env:
44 GH_TOKEN: ${{ steps.app-token.outputs.token }}
45 run: gh api /rate_limit | jq
46
47 - name: Create backport PRs
48 id: backport
49 uses: korthout/backport-action@0193454f0c5947491d348f33a275c119f30eb736 # v3.2.1
50 with:
51 # Config README: https://github.com/korthout/backport-action#backport-action
52 copy_labels_pattern: 'severity:\ssecurity'
53 github_token: ${{ steps.app-token.outputs.token }}
54 pull_description: |-
55 Bot-based backport to `${target_branch}`, triggered by a label in #${pull_number}.
56
57 * [ ] Before merging, ensure that this backport is [acceptable for the release](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#changes-acceptable-for-releases).
58 * Even as a non-committer, if you find that it is not acceptable, leave a comment.
59
60 - name: Log current API rate limits
61 env:
62 GH_TOKEN: ${{ steps.app-token.outputs.token }}
63 run: gh api /rate_limit | jq
64
65 - name: "Add 'has: port to stable' label"
66 if: steps.backport.outputs.created_pull_numbers != ''
67 uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
68 with:
69 # Not using the app on purpose to avoid triggering another workflow run after adding this label.
70 script: |
71 await github.rest.issues.addLabels({
72 owner: context.repo.owner,
73 repo: context.repo.repo,
74 issue_number: context.payload.pull_request.number,
75 labels: [ '8.has: port to stable' ]
76 })