validate-new-news.yml

---
name: Validate new news entries

on:
  pull_request:  # Trigger on PRs to develop
    branches:
      - develop

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0

      - name: Get out of detached head state
        run: |
          git fetch origin ${{ github.base_ref }}
          git fetch origin ${{ github.ref }}
          git checkout FETCH_HEAD --
      - name: Setup Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.7

      - name: Validate new news items
        run: |
          git diff --name-status origin/${{ github.base_ref }}
          git diff --name-status origin/${{ github.base_ref }}\
          | python scripts/verify-news-fragments.py

      - name: Install towncrier
        run: pip install -q -U setuptools wheel towncrier

      - name: Run towncrier
        run: towncrier --draft