{
  config,
  lib,
  pkgs,
  ...
}:
let
  cfg = config.feature.firefox;
in
{
  options.feature.firefox = {
    enable = lib.mkEnableOption "Set up firefox";
  };

  config = lib.mkIf cfg.enable {
    programs.firefox = {
      enable = true;

      # Firefox is expected to be installed as a system package
      package = null;

      profiles.irl = {
        extensions = {
          force = true;
          packages = with pkgs.nur.repos.rycee.firefox-addons; [
            bitwarden
            granted
            kagi-search
            multi-account-containers
            privacy-badger
            recap
            rsf-censorship-detector
          ];
        };
        settings = {
          "browser.newtabpage.activity-stream.discoverystream.sendToPocket.enabled" = false;
          "browser.newtabpage.activity-stream.feeds.section.topstories" = false;
          "browser.newtabpage.activity-stream.showSponsored" = false;
          "browser.newtabpage.activity-stream.showSponsoredCheckboxes" = false;
          "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
          "browser.search.suggest.enabled.private" = false;
          "datareporting.policy.firstRunURL" = "https://irl.xyz/";
          "extensions.autoDisableScope" = 0;
          "extensions.pocket.enabled" = false;
          "identity.fxaccounts.enabled" = false;
        };
        userContent = ''
          /* It's a dot not an interpunct */
          .govuk-logo-dot {
            fill: #fff !important;
            transform: translate(0, 14.5px);
          }
        '';
      };
    };
  };
}