Fail lint CI if the PR doesn't target main (#3477)

[etc/vim.git] / .github / workflows / lint.yml

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 2480a5ec1316927d0c89983f94075d4cfaf167e1..064d4745a53c1d2125a27205ab88839368db2788 100644 (file)
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,16 +14,29 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - name: Set up Python
-        uses: actions/setup-python@v2
+      - name: Assert PR target is main
+        if: github.event_name == 'pull_request' && github.repository == 'psf/black'
+        run: |
+          if [ "$GITHUB_BASE_REF" != "main" ]; then
+              echo "::error::PR targeting '$GITHUB_BASE_REF', please refile targeting 'main'." && exit 1
+          fi
+
+      - name: Set up latest Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "*"
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade pre-commit
           python -m pip install -e '.[d]'
+          python -m pip install tox
 
-      - name: Lint
-        run: pre-commit run --all-files --show-diff-on-failure
+      - name: Run pre-commit hooks
+        uses: pre-commit/action@v3.0.0
+
+      - name: Format ourselves
+        run: |
+          tox -e run_self