add NUR

install ublock origin firefox extension

configuration.nix

@@ -5,6 +5,12 @@ let
   home-manager = builtins.fetchTarball "https://github.com/nix-community/home-manager/archive/release-${stateVersion}.tar.gz";
 in
   {
+    nixpkgs.config.packageOverrides = pkgs: {
+      nur = import (builtins.fetchTarball "https://github.com/nix-community/NUR/archive/master.tar.gz") {
+        inherit pkgs;
+      };
+    };
+
   imports =
     [
       ./hardware-configuration.nix

home.nix

@@ -12,13 +12,18 @@
   programs = {
     home-manager.enable = true;
     alacritty.enable = true;
-    # ripgrep.enable = true;
 
     firefox = {
       enable = true;
       profiles.default = {
         id = 0;
         isDefault = true;
+        settings = {
+          "browser.aboutConfig.showWarning" = false;
+        };
+        extensions = with pkgs.nur.repos.rycee.firefox-addons; [
+          ublock-origin
+        ];
       };
     };