Add new workflow and test

Author: michaelmckinsey1

.github/workflows/diffpackages.yml

@@ -0,0 +1,29 @@
+name: Check Packages Against Spack
+on:
+  push:
+    paths:
+      - repo/**/package.py
+
+jobs:
+  diffPackages:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+
+      - name: Add needed Python libs
+        run: |
+          pip install -r ./requirements.txt
+
+      # Step 4: Get the list of modified files
+      - name: Get modified files
+        id: get_modified_files
+        run: |
+          echo "MODIFIED_FILES=$(git diff --name-only HEAD^ HEAD | grep '^repo/')" >> $GITHUB_ENV
+
+      # Step 5: Run the diffPackages.py script with modified files
+      - name: Run diffPackages.py
+        if: env.MODIFIED_FILES != ''
+        run: |
+          MODIFIED_FILES=($MODIFIED_FILES)
+          ./bin/benchpark-python lib/scripts/diffPackages.py --packages ${MODIFIED_FILES[@]}

repo/raja-perf/package.py

@@ -360,3 +360,7 @@ def initconfig_package_entries(self):
     def cmake_args(self):
         options = [f"-DMPI_CXX_LINK_FLAGS='{self.spec['mpi'].libs.ld_flags}'"]
         return options
+
+
+def _test_func():
+    pass