Update flake.nix

flake.nix

@@ -38,24 +38,27 @@
   };
 
   outputs = inputs:
-    let gen = import ./generator.nix { inherit inputs; };
+    let
+      lib = inputs.nixpkgs.lib;
+      gen = import ./generator.nix { inherit inputs; };
+      systemsDir = ./systems;
+      systemNames = lib.attrNames (lib.filterAttrs
+        (name: type: type == "directory" && builtins.pathExists (systemsDir + "/${name}/cfg.nix"))
+        (builtins.readDir systemsDir));
+      hostsByType = systemType:
+        lib.filter
+          (host: (import (systemsDir + "/${host}/cfg.nix")).syscfg.type == systemType)
+          systemNames;
+      generateHosts = systemType:
+        builtins.listToAttrs (map
+          (host: lib.nameValuePair host (gen.generate { inherit host; }))
+          (hostsByType systemType));
     in {
       devShells = import ./shells { inherit inputs; };
 
-      nixosConfigurations = {
-        valinor = gen.generate { host = "valinor"; };
-        iriy = gen.generate { host = "iriy"; };
-        efir = gen.generate { host = "efir"; };
-        avalon = gen.generate { host = "avalon"; };
-        ci = gen.generate { host = "ci"; };
-        sandbox = gen.generate { host = "sandbox"; };
-        gateway = gen.generate { host = "gateway"; };
-      };
-      darwinConfigurations = { asgard = gen.generate { host = "asgard"; }; };
-      homeConfigurations = {
-        yomi = gen.generate { host = "example"; };
-        example = gen.generate { host = "example"; };
-      };
+      nixosConfigurations = generateHosts "nixos";
+      darwinConfigurations = generateHosts "macos";
+      homeConfigurations = generateHosts "home";
     };
 
   # ===== Unsupported/NotImplemented ======