home/programs/browsers: add betterfox to firefox

home/programs/browsers.nix

@@ -1,6 +1,13 @@
 {pkgs, ...}: {
   programs.chromium.enable = true;
-  programs.firefox = {
+  programs.firefox = let
+    betterfox = pkgs.fetchFromGitHub {
+      owner = "yokoffing";
+      repo = "betterfox";
+      rev = "e026ed7d3a763c5d3f96c2680d7bc3340831af4f";
+      hash = "sha256-hpkEO5BhMVtINQG8HN4xqfas/R6q5pYPZiFK8bilIDs=";
+    };
+  in {
     enable = true;
     profiles = {
       nezia = {
@@ -44,6 +51,13 @@
             "Google".metaData.alias = "@g"; # builtin engines only support specifying one additional alias
           };
         };
+        # stolen from https://github.com/oddlama/nix-config/blob/main/users/myuser/graphical/firefox.nix#L53-L57
+        extraConfig = builtins.concatStringsSep "\n" [
+          (builtins.readFile "${betterfox}/Securefox.js")
+          (builtins.readFile "${betterfox}/Fastfox.js")
+          (builtins.readFile "${betterfox}/Peskyfox.js")
+          (builtins.readFile "${betterfox}/Smoothfox.js")
+        ];
         isDefault = true;
       };
     };