Codified firefox config as a GPO with userChrome while nixos firefox 23.11 gets patched.

flake.lock

@@ -448,6 +448,21 @@
         "type": "github"
       }
     },
+    "nur": {
+      "locked": {
+        "lastModified": 1704913619,
+        "narHash": "sha256-RpdG4vYs+WLCYzDZXDC4sYp5eD/De3CBeO5/CheyZxM=",
+        "owner": "nix-community",
+        "repo": "NUR",
+        "rev": "7446d0fcbcadfcfcbc9197c5b836cf442896590c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "NUR",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks": {
       "inputs": {
         "flake-compat": "flake-compat",
@@ -484,6 +499,7 @@
         "nix-vscode-extensions": "nix-vscode-extensions",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_3",
+        "nur": "nur",
         "stylix": "stylix"
       }
     },

flake.nix

@@ -5,6 +5,9 @@
     # Nixpkgs
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
+    # NUR
+    nur.url = "github:nix-community/NUR";
+
     # NixOS-Hardware
     nixos-hardware.url = "github:NixOS/nixos-hardware";
 
@@ -31,6 +34,7 @@
   };
   outputs = inputs @ {
     nixpkgs,
+    nur,
     stylix,
     home-manager,
     ...
@@ -52,6 +56,9 @@
           #kde2nix Module
           inputs.kde2nix.nixosModules.default
 
+          # NUR Modules
+          nur.nixosModules.nur
+
           # Theme Modules
           stylix.nixosModules.stylix
           ./themes/targets/all-desktop.nix
@@ -71,6 +78,7 @@
             };
             home-manager.users.panotaka = {
               imports = [
+                nur.hmModules.nur
                 ./home
                 ./home/shell
                 ./home/desktop
@@ -90,6 +98,9 @@
 
         # Modules
         modules = [
+          # NUR Modules
+          nur.nixosModules.nur
+
           # Theme Modules
           stylix.nixosModules.stylix
           ./themes/targets/all.nix
@@ -110,6 +121,7 @@
 
             home-manager.users.panotaka = {
               imports = [
+                nur.hmModules.nur
                 ./home
                 ./home/shell
                 ./home/desktop

home/desktop/browsers.nix

@@ -7,12 +7,75 @@
     };
 
     firefox = {
+      policies = {
+        ExtensionSettings = {
+          # Allow extensions to be installed from anywhere
+          "*" = {
+            "installation_mode" = "allowed";
+          };
+
+          # uBlock Origin
+          "uBlock0@raymondhill.net" = {
+            "installation_mode" = "force_installed";
+            "install_url" = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
+          };
+
+          # LocalCDN
+          "{b86e4813-687a-43e6-ab65-0bde4ab75758}" = {
+            "installation_mode" = "force_installed";
+            "install_url" = "https://addons.mozilla.org/firefox/downloads/latest/localcdn-fork-of-decentraleyes/latest.xpi";
+          };
+
+          # Sidebery
+          "{3c078156-979c-498b-8990-85f7987dd929}" = {
+            "installation_mode" = "force_installed";
+            "install_url" = "https://addons.mozilla.org/firefox/downloads/latest/sidebery/latest.xpi";
+          };
+
+          # User-Agent Switcher and Manager
+          "{a6c4a591-f1b2-4f03-b3ff-767e5bedf4e7}" = {
+            "installation_mode" = "force_installed";
+            "install_url" = "https://addons.mozilla.org/firefox/downloads/latest/user-agent-switcher-and-manager/latest.xpi";
+          };
+        };
+      };
       enable = true;
       profiles.panotaka = {
         settings = {
           "widget.use-xdg-desktop-portal.file-picker" = 1;
         };
+        userChrome = ''
+          #TabsToolbar
+          {
+            visibility: collapse;
+          }
+        '';
       };
+      /*
+      # Wait for https://github.com/NixOS/nixpkgs/pull/269817 to be merged
+      package = pkgs.wrapFirefox pkgs.firefox-unwrapped {
+        nixExtensions = with config.nur.repos.rycee.firefox-addons; [
+          ublock-origin
+          localcdn
+        ];
+
+        extraPolicies = {
+          CaptivePortal = false;
+          DisableFirefoxStudies = true;
+          DisablePocket = true;
+          DisableTelemetry = true;
+          DisableFirefoxAccounts = true;
+          FirefoxHome = {
+            Pocket = false;
+            Snippets = false;
+          };
+          UserMessaging = {
+            ExtensionRecommendations = false;
+            SkipOnboarding = true;
+          };
+        };
+      };
+      */
     };
   };
 }