Add flake templates and defaultApp

defaultApp lets you use bin/hey via nix run.

flake.nix

@@ -64,10 +64,21 @@
       devShell."${system}" =
         import ./shell.nix { inherit pkgs; };
 
-      templates.hey = {
+      templates = {
+        full = {
           path = ./.;
-        description = "A grossly incandescent nixos framework";
+          description = "A grossly incandescent nixos config";
+        };
+        minimal = {
+          path = ./templates/minimal;
+          description = "A grossly incandescent and minimal nixos config";
+        };
+      };
+      defaultTemplate = self.templates.minimal;
+
+      defaultApp."${system}" = {
+        type = "app";
+        program = ./bin/hey;
       };
-      defaultTemplate = self.templates.hey;
     };
 }

templates/minimal/flake.nix

@@ -0,0 +1,16 @@
+{
+  description = "A grossly incandescent nixos config.";
+
+  inputs = {
+    dotfiles.url = "github:hlissner/dotfiles";
+  };
+
+  outputs = inputs @ { dotfiles, ... }: {
+    nixosConfigurations = dotfiles.lib.mapHosts ./hosts {
+      imports = [
+        # If this is a linode machine
+        # "${dotfiles}/hosts/linode.nix"
+      ];
+    };
+  };
+}