Add more firefox settings

flake.nix

@@ -3,27 +3,38 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
+    nur.url = "github:nix-community/NUR";
 
     home-manager = {
       url = "github:nix-community/home-manager/release-24.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    firefox-gnome-theme = {
+      url = "github:rafaelmardojai/firefox-gnome-theme";
+      flake = false;
+    };
   };
 
-  outputs = { nixpkgs, home-manager, ... }:
+  outputs = { nixpkgs, home-manager, nur, ... } @inputs:
     {
       nixosConfigurations.Mirkwood = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
           ./hosts/Mirkwood/configuration.nix
           ./nixos_common.nix
+          { nixpkgs.overlays = [ nur.overlay ]; }
 
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
-            home-manager.useUserPackages = true;
-            home-manager.users.functionalhacker =
-              import ./users/functionalhacker/home.nix;
+            home-manager = {
+              useGlobalPkgs = true;
+              useUserPackages = true;
+              extraSpecialArgs = { inherit inputs; };
+              backupFileExtension = "bak";
+              users.functionalhacker =
+                import ./users/functionalhacker/home.nix;
+            };
           }
         ];
       };