fix

.gitlab-ci.yml

@@ -11,7 +11,7 @@ ci:
     - nix-env -iA cachix -f https://cachix.org/api/v1/install
     - cachix use ghc
     - nix-shell -p git
-    - nix-shell -f shell.nix -i -A 'buildInputs'
+    - nix-env -f shell.nix -i -A 'buildInputs'
     - cabal update
     - cabal build -w ghc-9.2.4 ghc-debug-brick ghc-debug-common ghc-debug-convention ghc-debug-client ghc-debug-stub
     - cabal test -w ghc-9.2.4