.mergify.yml

queue_rules:
  - name: default
    conditions:
      # Conditions to get out of the queue (= merged)
      - "check-success=Decision Task"
      - "check-success=run-tests"
      - "check-success=check-formatting"
      - "#check-success-or-neutral>=5" # we should always have at least this many checks
      - "#check-pending=0"
      - "#check-stale=0"
      - "#check-failure=0"
pull_request_rules:
  - name: remove outdated reviews for non-core authors
    conditions:
      - base=main
      - author!=@mozilla/application-services
      - author!=@mozilla/application-services-collaborators
      - author!=@mozilla/release-management
    actions:
      dismiss_reviews:
        message: The pull request has been modified, dismissing previous reviews.
      label:
        remove:
          - checkin-needed
  - name: automatic merge for main
    conditions:
      - "#approved-reviews-by>=1"
      - base=main
      - label=checkin-needed
      # What we want to say here is "all checks passed", but that's not a concept
      # that makes sense in GitHub:
      #
      #    https://docs.mergify.io/conditions/#validating-all-status-checks
      #
      # But we don't want to just list out all the checks, because we have many of
      # them and some of them are added dynamically and we might add or remove checks
      # without updating the list here.
      #
      # So instead we insist that a small set of known checks has completed,
      # and also that there are no other checks in unexpected states.
      - "check-success=Decision Task"
      - "check-success=run-tests"
      - "check-success=check-formatting"
      - "#check-success-or-neutral>=5" # we should always have at least this many checks
      - "#check-pending=0"
      - "#check-stale=0"
      - "#check-failure=0"
    actions:
      # This merges by rebasing without strict merge, which means that mergify will *attempt*
      # to rebase a matching PR directly on to the `main` branch, even if the PR is out of date.
      # However, our GitHub branch protection rules require that PRs must be up-to-date before merging,
      # and mergify respects these rules, so the expected behaviour here is that mergify will only
      # merge when it can cleanly put the exact commits of the PR directly on top of `main`
      # (and thus avoid having to re-write any commits or create merge commits of its own).
      queue:
        method: rebase
        name: default
        rebase_fallback: none