fixed it

flake.nix

@@ -1,12 +1,13 @@
 {
-  description = "A very basic flake";
+  description = "Provides nix flakes for development";
 
   outputs =
     { self }:
     {
       templates = {
+
         rust = {
-          path = ./rust-template;
+          path = ./rust;
           description = "A standard Rust development environment";
         };
       };

shell/flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "A simple Rust development environment";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      utils,
+    }:
+    utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+
+          name = "flake";
+
+          buildInputs = with pkgs; [
+            # Add packages
+          ];
+
+          # Environment variables
+          shellHook = ''
+            # Trigger zsh
+            if [[ -z "$ZSH_VERSION" ]]; then
+              exec zsh
+            fi
+          '';
+        };
+      }
+    );
+}