{ lib, ... }: {
  programs.firefox = let
    lock-false = {
      Value = false;
      Status = "locked";
    };
    lock-true = {
      Value = true;
      Status = "locked";
    };
    lock-empty-string = {
      Value = "";
      Status = "locked";
    };
  in {
    enable = true;
    policies = {
      DisableTelemetry = true;
      DisableFirefoxStudies = true;
      DontCheckDefaultBrowser = true;
      DisablePocket = true;
      DisableAccounts = true;

      Preferences = {
        "extensions.pocket.enabled" = lock-false;
        "browser.topsites.contile.enabled" = lock-false;
        "browser.newtabpage.pinned" = lock-empty-string;
        "browser.newtabpage.activity-stream.showSponsored" = lock-false;
        "browser.newtabpage.activity-stream.system.showSponsored" = lock-false;
        "browser.newtabpage.activity-stream.showSponsoredTopSites" = lock-false;
      };

      ExtensionSettings = {
        "uBlock0@raymondhill.net" = {
          install_url =
            "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
          installation_mode = "force_installed";
        };
        "{446900e4-71c2-419f-a6a7-df9c091e268b}" = {
          install_url =
            "https://addons.mozilla.org/firefox/downloads/latest/bitwarden-password-manager/latest.xpi";
          installation_mode = "force_installed";
        };
        "{d7742d87-e61d-4b78-b8a1-b469842139fa}" = {
          install_url =
            "https://addons.mozilla.org/firefox/downloads/latest/vimium-ff/latest.xpi";
          installation_mode = "force_installed";
        };
        "myallychou@gmail.com" = {
          install_url =
            "https://addons.mozilla.org/firefox/downloads/latest/youtube-recommended-videos/latest.xpi";
          installation_mode = "force_installed";
        };

      };

      UserMessaging = {
        UrlbarInterventions = false;
        SkipOnboarding = true;
      };
    };
  };
}