gha - save-always is deprecated in actions/cache@v4

So use restore and save steps correctly

Author: cderv

.github/actions/cache-typst/action.yml

@@ -1,10 +1,21 @@
-name: "Cache Typst package"
+name: "Restore any Typst package cache"
 description: "Configures the caching for Typst packages"
+outputs:
+  cache-hit:
+    description: "Is there a cache restored ?"
+    value: ${{ steps.cache-typst-restore.outputs.cache-hit }}
+  cache-key:
+    description: "Key of the cache considered"
+    value: ${{ steps.cache-typst-restore.outputs.cache-primary-key }}
+  cache-path:
+    description: "where is the packages cache for typst ?"
+    value: ${{ steps.cache-typst-path.outputs.TYPST_CACHE }}
 
 runs:
   using: "composite"
   steps:
     - name: Typst Cache path
+      id: cache-typst-path
       run: |
         case $RUNNER_OS in
           "Linux")
@@ -21,13 +32,12 @@ runs:
               exit 1
               ;;
         esac
+        echo "TYPST_CACHE=${TYPST_CACHE}" >> $GITHUB_OUTPUT
       shell: bash
 
     - name: Cache Typst package folder
-      uses: actions/cache@v4
+      id: cache-typst-restore
+      uses: actions/cache/restore@v4
       with:
         path: ${{ env.TYPST_CACHE }}
-        key: ${{ runner.os }}-typst-1-${{ github.run_id }}
-        restore-keys: |
-          ${{ runner.os }}-typst-1-
-        save-always: true
+        key: ${{ runner.os }}-typst-1

.github/workflows/test-smokes.yml

@@ -161,6 +161,7 @@ jobs:
           quarto install tinytex
 
       - name: Cache Typst packages
+        id: cache-typst
         uses: ./.github/actions/cache-typst
 
       - name: Install Chrome
@@ -289,6 +290,12 @@ jobs:
           name: timed test file
           path: tests/timing-for-ci.txt
 
+      - name: Save Typst cache
+        if: always()
+        uses: actions/cache/save@v4
+        with:
+          key: ${{ steps.cache-typst.outputs.cache-key }}
+
       - uses: actions/upload-artifact@v4
         # PLaywright test only runs on Linux for now
         if: ${{ !cancelled() && runner.os != 'Windows' }}