Run nix fmt

Format using `nixfmt-rfc-style`.

lib/nixos/default.nix

@@ -1,15 +1,36 @@
-{ inputs, self, username }:
-{ desktop ? false, hostname }:
+{
+  inputs,
+  self,
+  username,
+}:
+{
+  desktop ? false,
+  hostname,
+}:
 let
-  configuration =
-    import ./configuration.nix { inherit desktop hostname inputs self; };
+  configuration = import ./configuration.nix {
+    inherit
+      desktop
+      hostname
+      inputs
+      self
+      ;
+  };
   hardwareConfiguration = import ./hardware-configuration.nix;
-in inputs.nixpkgs.lib.nixosSystem {
+in
+inputs.nixpkgs.lib.nixosSystem {
   modules = [
     inputs.home-manager.nixosModules.home-manager
     {
       home-manager = {
-        extraSpecialArgs = { inherit inputs desktop self username; };
+        extraSpecialArgs = {
+          inherit
+            inputs
+            desktop
+            self
+            username
+            ;
+        };
         useGlobalPkgs = true;
         useUserPackages = true;
         users."${username}" = import ./home-manager;