{
  pkgs,
  config,
  user_js,
  bookmarks,
  ...
}: let
  user_js_override = pkgs.writeText "user.override.js" (builtins.readFile ./override.js);
in
  pkgs.runCommand "user.js" {} ''
    mkdir $out;
    cat "${user_js}/user.js" > $out/user.js;
    cat "${user_js_override}" >> $out/user.js;

    cat << EOF >> $out/user.js;
    // My bookmarks
    user_pref("browser.bookmarks.file", "${toString bookmarks}");
    user_pref("browser.startup.homepage", "file:///home/dt/home.html"); // 0103 // TODO: add this from a flake
    user_pref("browser.download.dir", "${config.xdg.userDirs.download}");
    EOF
  ''