Update main.yml

Author: fkiraly

.github/workflows/main.yml

@@ -24,7 +24,31 @@ jobs:
         with:
           python-version: '3.13'
 
-      - uses: pre-commit/action@v3.0.1
+      - name: install pre-commit
+        run: python3 -m pip install pre-commit
+
+      - name: Checkout code
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Get changed files
+        id: changed-files
+        run: |
+          CHANGED_FILES=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | tr '\n' ' ')
+          echo "CHANGED_FILES=${CHANGED_FILES}" >> $GITHUB_ENV
+
+      - name: Print changed files
+        run: |
+          echo "Changed files: $CHANGED_FILES"
+
+      - name: Run pre-commit on changed files
+        run: |
+          if [ -n "$CHANGED_FILES" ]; then
+            pre-commit run --color always --files $CHANGED_FILES --show-diff-on-failure
+          else
+            echo "No changed files to check."
+          fi
 
   pytest:
     needs: code-quality