templates: use auto-configured checks/packages

templates/new/flake.nix

@@ -23,6 +23,15 @@
         inputs.nixvim.flakeModules.default
       ];
 
+      nixvim = {
+        # Automatically install `nixvim-<name>` packages for each nixvimConfiguration
+        # Lets you run `nix run .#nixvim-<name>`
+        packages.enable = true;
+        # Automatically install checks for each nixvimConfiguration
+        # Run `nix flake check .` to verify that your config is not broken
+        checks.enable = true;
+      };
+
       # You can define your reusable Nixvim modules here
       flake.nixvimModules = {
         default = ./config;
@@ -41,14 +50,9 @@
             };
           };
 
-          checks = {
-            # Run `nix flake check .` to verify that your config is not broken
-            default = config.nixvimConfigurations.default.config.build.test;
-          };
-
           packages = {
-            # Lets you run `nix run .` to start nixvim
-            default = config.nixvimConfigurations.default.config.build.package;
+            # Lets you start nixvim using `nix run`
+            default = config.packages.nixvim-default;
           };
         };
     };