diff --git a/flake.nix b/flake.nix
index 88dba6a..b02489a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,9 +12,9 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
-  outputs = { self, flake-utils, nixpkgs, uiua }:
-    let system = "x86_64-linux";
-  pkgs = nixpkgs.legacyPackages.${system};
+  outputs = { self,  nixpkgs, uiua, nickel }:
+  let system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
   in {
     packages = {
       uiua = uiua.packages.${system}.default;