fix: Re-enables copyright hook, updates GitHub Action to only run pre-commi… (#7699)

Author: pranavm-nvidia

.github/workflows/pre-commit.yaml

@@ -1,4 +1,4 @@
-# Copyright 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# Copyright 2023-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -34,6 +34,12 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v3
+      with:
+        fetch-depth: 2
+    - name: Get modified files
+      id: modified-files
+      run: echo "modified_files=$(git diff --name-only -r HEAD^1 HEAD | xargs)" >> $GITHUB_OUTPUT
     - uses: actions/setup-python@v3
     - uses: pre-commit/action@v3.0.0
-
+      with:
+        extra_args: --files ${{ steps.modified-files.outputs.modified_files }}

.pre-commit-config.yaml

@@ -73,13 +73,12 @@ repos:
   - id: requirements-txt-fixer
   - id: trailing-whitespace
 
-# FIXME: Only run on changed files when triggered by GitHub Actions
-#- repo: local
-#  hooks:
-#  - id: add-license
-#    name: Add License
-#    entry: python tools/add_copyright.py
-#    language: python
-#    stages: [pre-commit]
-#    verbose: true
-#    require_serial: true
+- repo: local
+  hooks:
+  - id: add-license
+    name: Add License
+    entry: python tools/add_copyright.py
+    language: python
+    stages: [pre-commit]
+    verbose: true
+    require_serial: true

tools/add_copyright.py

@@ -259,6 +259,8 @@ def add_copyrights(paths):
 
     # Don't automatically 'git add' changes for now, make it more clear which
     # files were changed and have ability to see 'git diff' on them.
+    # Note that this means the hook will modify files and then cancel the commit, which you will then
+    # have to manually make again.
     # subprocess.run(["git", "add"] + paths)
 
     print(f"Processed copyright headers for {len(paths)} file(s).")