style: format all nix files with nixfmt

hosts/default/configuration.nix

@@ -4,7 +4,10 @@
 
 {
   # use flakes
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
 
   # configure bootloader
   boot.loader.systemd-boot.enable = false;
@@ -29,7 +32,7 @@
   services.qemuGuest.enable = true;
 
   # networking
-  networking.hostName = "nixos"; 
+  networking.hostName = "nixos";
   networking.networkmanager.enable = true;
 
   # time zone.
@@ -60,9 +63,10 @@
 
     windowManager.qtile = {
       enable = true;
-      extraPackages = python3Packages: with python3Packages; [
-        qtile-extras
-      ];
+      extraPackages =
+        python3Packages: with python3Packages; [
+          qtile-extras
+        ];
     };
   };
 
@@ -71,8 +75,8 @@
 
   # enable sound
   services.pipewire = {
-     enable = true;
-     pulse.enable = true;
+    enable = true;
+    pulse.enable = true;
   };
 
   # define a user account
@@ -97,7 +101,10 @@
     autosuggestions.enable = true;
     ohMyZsh = {
       enable = true;
-      plugins = [ "git" "sudo" ];
+      plugins = [
+        "git"
+        "sudo"
+      ];
       theme = "agnoster";
     };
   };
@@ -116,8 +123,8 @@
   # Some programs need SUID wrappers
   programs.mtr.enable = true;
   programs.gnupg.agent = {
-     enable = true;
-     enableSSHSupport = true;
+    enable = true;
+    enableSSHSupport = true;
   };
 
   # enable the OpenSSH daemon
@@ -130,4 +137,3 @@
   # install state version
   system.stateVersion = "25.05"; # Don't change
 }
-