mergeable:
  pull_requests:
    label:
      and:
        - must_exclude:
            regex: '^disposition/DO NOT MERGE'
            message: 'Pull request marked not mergeable'
        - or:
          - and:
            - must_include:
                regex: 'release notes: yes'
                message: 'Include release notes: yes'
            - must_include:
                regex: '^(autotools|bazel|c#|c\+\+|cleanup|cmake|conformance tests|integration|go|java|javascript|objective-c|php|protoc|python|ruby|kotlin)'
                message: 'at least a language label (e.g., c++, java, python). Or apply one of the following labels: autotools, bazel, cmake, cleanup, conformance tests, integration, protoc.'
          - must_include:
              regex: 'release notes: no'
              message: 'Include release notes: no'