Update BuildMultiplatform.yml

Author: juraj-hrivnak

.github/workflows/BuildMultiplatform.yml

@@ -50,6 +50,24 @@ jobs:
             echo "projectsuffix=build.${{ github.run_number }}" >> $GITHUB_OUTPUT
           fi
 
+      - name: Diff
+        run: |
+          latest_tag=$(git describe --tags --abbrev=0)
+          latest_tagged_commit=$(git rev-list -n 1 --pretty=format:"%h" $latest_tag | sed -n 2p)
+
+          if [ "$latest_tag" = ${{ steps.version.outputs.tag }} ]; then
+            latest_tag=$(git describe --tags --abbrev=0 $(git describe --tags --abbrev=0)^)
+            latest_tagged_commit=$(git rev-list -n 1 --pretty=format:"%h" $latest_tag | sed -n 2p)
+          fi
+
+          echo "latest commit: $latest_commit"
+          echo "latest tagged commit: $latest_tagged_commit"
+
+          git show $latest_tagged_commit:./pakku-lock.json > ./pakku-lock-prev.json
+
+          curl https://github.com/juraj-hrivnak/pakku/releases/latest/download/pakku.jar -o pakku.jar -L -J
+          java -jar ./pakku.jar diff ./pakku-lock-prev.json ./pakku-lock.json
+
   build-modpack:
     name: Build Modpack
     runs-on: ubuntu-latest