nixos/firefox: add autoConfigFiles

      '';

    };

    autoConfigFiles = lib.mkOption {

      type = with lib.types; listOf path;

      default = [];

      description = ''

        AutoConfig files can be used to set and lock preferences that are not covered

        by the policies.json for Mac and Linux. This method can be used to automatically

        change user preferences or prevent the end user from modifiying specific

        preferences by locking them. More info can be found in https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig.

        Files are concated and autoConfig is appended.

      '';

    };

    nativeMessagingHosts = ({

      packages = lib.mkOption {

        type = lib.types.listOf lib.types.package;

    environment.systemPackages = [

      (cfg.package.override (old: {

        extraPrefsFiles = old.extraPrefsFiles or [] ++ [(pkgs.writeText "firefox-autoconfig.js" cfg.autoConfig)];

        extraPrefsFiles = old.extraPrefsFiles or [] ++ cfg.autoConfigFiles ++ [(pkgs.writeText "firefox-autoconfig.js" cfg.autoConfig)];

        nativeMessagingHosts = old.nativeMessagingHosts or [] ++ cfg.nativeMessagingHosts.packages;

        cfg = (old.cfg or {}) // cfg.wrapperConfig;

      }))