diff --git a/flake.nix b/flake.nix
index 4fe00f7..39c617d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,6 +12,11 @@
   outputs = { self, nixpkgs, devshell }:
     let
       systems = nixpkgs.lib.genAttrs [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
+      control4_env = rec {
+          lua = nixpkgs.lua5_1;
+      	  lua_busted = nixpkgs.lua51Packages.busted;
+          node = nixpkgs.nodejs_22;
+      };
     in
     {
       lib = {
@@ -28,6 +33,8 @@
         golangci-config-file = ./.golangci.yml;
 
         cd_root = "cd $PRJ_ROOT;";
+
+        control4_env = control4_env;
       };
 
       formatter = self.lib.forAllSystems (pkgs: pkgs.nixpkgs-fmt);