ci: rewrite changed-files to remove a previously hacked dependency

.github/workflows/test.yml

@@ -89,25 +89,43 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     permissions:
-      contents: write  # for pre-commit-ci/lite-action
+      contents: write # for pre-commit-ci/lite-action
     steps:
       - uses: actions/checkout@v5
         with:
           submodules: recursive
       - run: pip install pre-commit
       - uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47
-        id: file_changes
+        id: tj_file_changes
         with:
           # Only run pre-commit on EV files themselves, not on submodules
           # See https://github.com/EveryVoiceTTS/EveryVoice/issues/555
           exclude_submodules: true
-      - uses: actions/cache@v4  # enable caching for pre-commit
+      - name: Determine changed files
+        id: file_changes
+        run: |
+          echo "event_name: ${{ github.event_name }}"
+          case '${{ github.event_name }}' in
+            pull_request)
+              echo base.sha ${{ github.event.pull_request.base.sha }} head.sha ${{ github.sha }}
+              git diff --name-only ${{ github.event.pull_request.base.sha }}...${{ github.sha }}
+              echo "CHANGED_FILES='$(git diff --name-only ${{ github.event.pull_request.base.sha }}...${{ github.sha }})'" >> $GITHUB_OUTPUT ;;
+            push)
+              git diff --name-only HEAD~1...HEAD
+              echo "CHANGED_FILES='$(git diff --name-only HEAD~1...HEAD)'" >> $GITHUB_OUTPUT ;;
+            *)
+              echo other leave it empty
+              echo "CHANGED_FILES=''" >> $GITHUB_OUTPUT ;;
+          esac
+          echo "Changed files: $CHANGED_FILES"
+          echo "tj-actions/changed-files reported: ${{ steps.tj_file_changes.outputs.all_changed_files }}"
+      - uses: actions/cache@v4 # enable caching for pre-commit
         with:
           path: ~/.cache/pre-commit
           key: pre-commit-3|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}
       - name: Custom replacement for pre-commit/action
         # pre-commit/action is not compatible with conda-incubator/setup-miniconda because it sets the shell wrong.
-        run: python -m pre_commit run --show-diff-on-failure --color=always --files ${{ steps.file_changes.outputs.all_changed_files }}
+        run: python -m pre_commit run --show-diff-on-failure --color=always --files ${{ steps.file_changes.outputs.CHANGED_FILES }}
       - uses: pre-commit-ci/lite-action@5d6cc0eb514c891a40562a58a8e71576c5c7fb43 # v1.1.0
         if: always()