diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5f14da10a..08d315e47 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -93,6 +93,7 @@ backend dependencies:
         - .stack-work
   script:
     - "nix shell .#gnumake .#stack .#coreutils --command make backend-dependencies"
+    - "ls -a ." # TODO: debug only
   before_script: *nix-before
   artifacts:
     paths:
@@ -124,6 +125,7 @@ backend lint:
   cache:
     - *stack-cache
   script:
+    - "ls -a ." # TODO: debug only
     - "nix shell .#gnumake .#stack --command make backend-lint-prod"
   before_script: *nix-before
   needs: