fix template flake

Author: maxheld83

templates/default/flake.nix

@@ -1,21 +1,19 @@
 # flake.nix
 {
+  description = "The template flake";
+
   inputs.treefmt-nix.url = "github:numtide/treefmt-nix";
 
   outputs =
     {
       self,
       nixpkgs,
-      systems,
       treefmt-nix,
     }:
     let
       supportedSystems = [ "x86_64-linux" "aarch64-darwin" "x86_64-darwin" "aarch64-linux" ];
       forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
-        pkgs = import nixpkgs {
-          inherit system;
-          overlays = [ self.overlays.default ];
-        };
+        pkgs = import nixpkgs { inherit system; };
       });
     in
     {