add example

flake.nix

@@ -1,34 +1,46 @@
 {
   description = "";
   inputs = { 
-    config.url = "path:config";
-    playground.url = "path:playground/example/service"; 
+    nixpkgs.url = "nixpkgs/nixos-23.05";
   };
-  outputs = { self, config, playground }:
+
+  outputs = { self, nixpkgs }:
     let
       version = "0.0.1";
       name = "develnixos";
 
-      forAllSystems = config.forAllSystems;
-      nixpkgsFor = config.nixpkgsFor;
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
+      
       devTaskScripts = forAllSystems (system: {
         autoTag = nixpkgsFor.${system}.writeScript "auto_tag.sh" ''
           git tag --force v${version}
           git push origin v${version}
         '';
       });
-    in rec {
-      packages = playground.packages;
 
+      space = forAllSystems (system: rec {
+        config = import ./config { nixpkgs = nixpkgsFor.${system}; };
+        playground = import ./playground/example { config = config; };
+      });
+
+    in rec {
+      packages = forAllSystems (system: {
+          default = space.${system}.playground.package;
+        });
       apps = forAllSystems (system:
         let
+          testConfig = import ./config { nixpkgs = nixpkgsFor.${system}; };
+          testapp = import ./playground/example { config = testConfig; };
+
           updateLockScript =
             nixpkgsFor.${system}.writeShellScriptBin "update_flake_lock.sh" ''
               nix --experimental-features 'nix-command flakes' flake lock --update-input nixpkgs
               nix --experimental-features 'nix-command flakes' build 
             '';
         in {
-          default = playground.apps.default;
+          default = space.${system}.playground.app;
           devTasks = {
             updateFlakeLock = {
               type = "app";