big refactoring

lib/mkSystem.nix

@@ -0,0 +1,27 @@
+{
+  inputs,
+  ...
+}:
+{
+  deviceType,
+  hostname ? null,
+  modules ? [ ],
+  system ? "x86_64-linux",
+}:
+let
+  lib = inputs.nixpkgs.lib;
+in
+lib.nixosSystem {
+  inherit system;
+  modules = modules ++ [
+    {
+      xlib.device = {
+        type = deviceType;
+      }
+      // lib.optionalAttrs (hostname != null) { inherit hostname; };
+    }
+  ];
+  specialArgs = {
+    inherit deviceType inputs;
+  };
+}