Add firefox-gnome-theme

flake.lock

@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "firefox-gnome-theme": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1686332136,
+        "narHash": "sha256-Cqwqwu2KqHJOwh3sldU59+kz+gQM2f2Z9ZbX6TjzUOg=",
+        "owner": "rafaelmardojai",
+        "repo": "firefox-gnome-theme",
+        "rev": "25a9ab399e0c3c21d28d25d428871d7ed8a3719a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rafaelmardojai",
+        "repo": "firefox-gnome-theme",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -38,6 +54,7 @@
     },
     "root": {
       "inputs": {
+        "firefox-gnome-theme": "firefox-gnome-theme",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs"
       }

flake.nix

@@ -7,6 +7,10 @@
       url = "github:nix-community/home-manager/release-23.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    firefox-gnome-theme = {
+      url = "github:rafaelmardojai/firefox-gnome-theme";
+      flake = false;
+    };
   };
 
   outputs = inputs @ { self, nixpkgs, home-manager, ... }:

modules/desktop/browsers/firefox.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, inputs, ... }:
 
 with lib;
 with lib.my;
@@ -9,8 +9,28 @@ in {
   };
 
   config = mkIf cfg.enable {
+    home.file.".mozilla/firefox/Default/chrome/firefox-gnome-theme".source = inputs.firefox-gnome-theme;
+
     home.programs.firefox = {
       enable = true;
+      profiles.Default = {
+        search = {
+          default = "DuckDuckGo";
+          force = true;
+        };
+        userChrome = ''
+          @import "firefox-gnome-theme/userChrome.css";
+        '';
+        userContent = ''
+          @import "firefox-gnome-theme/userContent.css";
+        '';
+        settings = {
+          "toolkit.legacyUserProfileCustomizations.stylesheets" = true; # Enable customChrome.cs
+          "browser.uidensity" = 0; # Set UI density to normal
+          "svg.context-properties.content.enabled" = true; # Enable SVG context-propertes
+          "browser.theme.dark-private-windows" = false; # Disable private window dark theme
+        };
+      };
     };
   };
-}
+}