diff --git a/configuration.nix b/configuration.nix
index ba80618..7abc749 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -85,7 +85,7 @@
 
   services.xserver.desktopManager.gnome = {
     enable = true;
-    extraGSettingsOverridePackages = [ pkgs.gnome.mutter ];
+    extraGSettingsOverridePackages = [ pkgs.mutter ];
     extraGSettingsOverrides = ''
       [org.gnome.mutter]
       experimental-features=['scale-monitor-framebuffer']
@@ -102,7 +102,7 @@
   services.printing.enable = true;
 
   # Enable sound with pipewire.
-  hardware.pulseaudio.enable = false;
+  services.pulseaudio.enable = false;
   security.rtkit.enable = true;
   services.pipewire = {
     enable = true;
@@ -186,6 +186,8 @@
     git
     pstree
     jq
+    nixd
+    nixpkgs-fmt
     bfg-repo-cleaner
     lazygit
     tmux
@@ -249,16 +251,10 @@
       hack-font
       cascadia-code
       roboto-mono
-      (nerdfonts.override {
-          fonts = [
-            # symbols icon only
-            "NerdFontsSymbolsOnly"
-            # Characters
-            "FiraCode"
-            "Recursive"
-            "Iosevka"
-          ];
-        })
+      nerd-fonts.fira-code
+      nerd-fonts.recursive-mono
+      nerd-fonts.iosevka
+      nerd-fonts.symbols-only
     ];
 
   };