Rename system to lib

lib/nixos/default.nix

@@ -0,0 +1,29 @@
+{
+  inputs,
+  pkgs,
+  self,
+  system,
+  username,
+}: {
+  desktop ? false,
+  hostname,
+}: let
+  configuration = import ./configuration.nix {inherit desktop hostname inputs pkgs system;};
+  hardware-configuration = import ./hardware-configuration.nix;
+in
+  inputs.nixpkgs.lib.nixosSystem {
+    modules = [
+      inputs.home-manager.nixosModules.home-manager
+      {
+        home-manager = {
+          extraSpecialArgs = {inherit inputs desktop self username;};
+          useGlobalPkgs = true;
+          useUserPackages = true;
+          users."${username}" = import ./home-manager;
+        };
+      }
+
+      configuration
+      hardware-configuration
+    ];
+  }