diff --git a/source/recipes/devshell/env-var/tempwork/flake.lock b/source/recipes/devshell/env-var/tempwork/flake.lock
deleted file mode 100644
index 02b2a17..0000000
--- a/source/recipes/devshell/env-var/tempwork/flake.lock
+++ /dev/null
@@ -1,60 +0,0 @@
-{
-  "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1760301964,
-        "narHash": "sha256-5oeX7NvYHNslymyCmX9mLEmLp07a8ai522G8J4VrDrs=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "1b5c1881789eb8c86c655caeff3c918fb76fbfe6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/source/recipes/devshell/env-var/tempwork/flake.nix b/source/recipes/devshell/haskell-flake/tempwork/flake.nix
similarity index 65%
rename from source/recipes/devshell/env-var/tempwork/flake.nix
rename to source/recipes/devshell/haskell-flake/tempwork/flake.nix
index 7d462f8..331af5e 100644
--- a/source/recipes/devshell/env-var/tempwork/flake.nix
+++ b/source/recipes/devshell/haskell-flake/tempwork/flake.nix
@@ -4,17 +4,16 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs = { self, nixpkgs, flake-utils, pandoc-columns }:
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = import nixpkgs { inherit system; };
+        customGhc = pkgs.haskellPackages.ghcWithPackages (p: with p; [ extra ]);
       in
       {
         devShells = rec {
           default = pkgs.mkShell {
-            shellHook = ''
-              export FOO="bar"
-            '';
+	          buildInputs = [ customGhc ];
           };
         };
       }