chore(gitlab-ci): add debug find

.gitlab-ci.yml

@@ -79,18 +79,19 @@ well-known:
       - well-known/
       - .well-known-cache/
 
+# TODO: cache is always uploaded even if up-to-date; prevent re-upload when up-to-date
 backend dependencies:
   stage: setup
   cache:
     - &stack-cache
       key: default-stack
       paths:
-        - .stack
+        - .stack/
   script:
     - make backend-dependencies-prod
   artifacts:
     paths:
-      - .stack
+      - .stack/
 
 frontend build:
   stage: build
@@ -114,6 +115,7 @@ uniworx:
     - *stack-cache
   script:
     - make bin/uniworx
+    - find .stack-work
     - cp $(stack path --dist-dir)/build/hlint/hlint bin/test-hlint
     - cp $(stack path --dist-dir)/build/yesod/yesod bin/test-yesod
   needs: