diff --git a/source/recipes/devshell/haskell-pkg/tempwork/flake.lock b/source/recipes/devshell/env-var/tempwork/flake.lock
similarity index 100%
rename from source/recipes/devshell/haskell-pkg/tempwork/flake.lock
rename to source/recipes/devshell/env-var/tempwork/flake.lock
diff --git a/source/recipes/devshell/haskell-pkg/tempwork/flake.nix b/source/recipes/devshell/env-var/tempwork/flake.nix
similarity index 75%
rename from source/recipes/devshell/haskell-pkg/tempwork/flake.nix
rename to source/recipes/devshell/env-var/tempwork/flake.nix
index 5eb2141..7d462f8 100644
--- a/source/recipes/devshell/haskell-pkg/tempwork/flake.nix
+++ b/source/recipes/devshell/env-var/tempwork/flake.nix
@@ -8,12 +8,13 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = import nixpkgs { inherit system; };
-        customGhc = pkgs.haskellPackages.ghcWithPackages (p: with p; [ p.extra ]);
       in
       {
         devShells = rec {
           default = pkgs.mkShell {
-	          buildInputs = [ customGhc ];
+            shellHook = ''
+              export FOO="bar"
+            '';
           };
         };
       }
diff --git a/source/recipes/devshell/haskell-pkg/tempwork/Main.hs b/source/recipes/devshell/haskell-pkg/tempwork/Main.hs
deleted file mode 100644
index 4fe2929..0000000
--- a/source/recipes/devshell/haskell-pkg/tempwork/Main.hs
+++ /dev/null
@@ -1,6 +0,0 @@
-import Data.List.Extra
-
-main :: IO ()
-main = do
-  print $ lower "ABCDE"
-  print $ upper "XYZ"