pr_labels.yml

# Manages labels on PRs before allowing merging
name: PR labels

on:
  pull_request:
    types: [opened, labeled, unlabeled, synchronize]

# if a second commit is pushed quickly after the first, cancel the first one's build
concurrency:
  group: pr-labels-${{github.head_ref}}
  cancel-in-progress: true

jobs:
  Labels:
    runs-on: ubuntu-latest

    permissions: 
      pull-requests: read # needed to utilize required-labels

    steps:
      - name: Merge-Blocking Labels # blocks merge if present
        uses: mheap/github-action-required-labels@v3
        with:
          mode: exactly
          count: 0
          labels: "status: do not merge"
          exit_type: failure
      
      - name: Required Changelog Labels # require at least one of these labels
        uses: mheap/github-action-required-labels@v3
        with:
          mode: minimum
          count: 1
          labels: "type: feature, type: bug, type: refactor, type: translation, ignore changelog"
          exit_type: failure