Check CI Hlint cache issue

.circleci/config.yml

@@ -381,7 +381,18 @@ jobs:
         - checkout
         - *project-preinstall
         - *restore
-        
+        - run:
+            name: Hlint src
+            environment:
+              BUILD: cabal-v2
+              HLINT_OPTIONS: lint --cpp-include=src --cpp-include=test
+              HLINT_TARGETS: src test benchmark
+            command: |
+              bash -c "$PACKCHECK $BUILD" || exit 1
+              count=$(find . -name "*.hs" -exec grep -H '\ $' {} \; | tee /dev/tty | wc -l)
+              exit $count
+        - *save
+
 workflows:
   version: 2
   build: