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path: root/.github/workflows/periodic-merge-6h.yml
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# This action periodically merges base branches into staging branches.
# This is done to
#  * prevent conflicts or rather resolve them early
#  * make all potential breakage happen on the staging branch
#  * and make sure that all major rebuilds happen before the staging
#    branch get’s merged back into its base branch.

name: "Periodic Merges (6h)"

on:
  schedule:
    # * is a special character in YAML so you have to quote this string
    # Merge every 6 hours
    - cron: '0 */6 * * *'
  workflow_dispatch:

permissions: {}

defaults:
  run:
    shell: bash

jobs:
  periodic-merge:
    if: github.repository_owner == 'NixOS' || github.event_name == 'workflow_dispatch'
    strategy:
      # don't fail fast, so that all pairs are tried
      fail-fast: false
      # certain branches need to be merged in order, like master->staging-next->staging
      # and disabling parallelism ensures the order of the pairs below.
      max-parallel: 1
      matrix:
        pairs:
          - from: master
            into: staging-next
          - from: staging-next
            into: staging
          - from: master
            into: staging-nixos
    uses: ./.github/workflows/periodic-merge.yml
    with:
      from: ${{ matrix.pairs.from }}
      into: ${{ matrix.pairs.into }}
    name: ${{ format('{0} → {1}', matrix.pairs.from, matrix.pairs.into) }}
    secrets:
      NIXPKGS_CI_APP_PRIVATE_KEY: ${{ secrets.NIXPKGS_CI_APP_PRIVATE_KEY }}