Experiment: do I need to cache myself?

.github/actions/stack-test/action.yml

@@ -7,16 +7,13 @@ runs:
       id: ghcup
       with:
         stack-hook: true
+        stack: latest
     - uses: actions/cache@v4
       with:
-        path: |
-          ${{ steps.ghcup.outputs.basedir }}
-          ~/.stack
+        path: ~/.stack
         key: stack-${{ runner.os }}-${{ hashFiles('stack.yaml') }}
         restore-keys: |
           stack-${{ runner.os }}-
           ${{ runner.os }}-
-    - run: ghcup install stack
-      shell: bash
     - run: stack test
       shell: bash