started modifing configuration structure

hosts/default.nix

@@ -0,0 +1,23 @@
+{ self, nixpkgs, ... }: { systemSettings, userSettings, ... }:
+let
+  inherit (self) inputs;
+  inherit systemSettings userSettings;
+  mkHost = name:
+    nixpkgs.lib.nixosSystem {
+      modules = [
+        ./${name}
+        {
+          nixpkgs.hostPlatform = systemSettings.system;
+        }
+      ] ++ builtins.attrValues self.nixosModules;
+
+      specialArgs = {
+        inherit inputs;
+        inherit systemSettings;
+        inherit userSettings;
+      };
+    };
+in
+{
+  syushiki = mkHost "syushiki";
+}