{ ... }:
{

  xdg.mime.defaultApplications = {
    "application/pdf" = "zen.desktop";
    "text/html" = "zen.desktop";
    "x-scheme-handler/http" = "zen.desktop";
    "x-scheme-handler/https" = "zen.desktop";
    "x-scheme-handler/about" = "zen.desktop";
    "x-scheme-handler/unknown" = "zen.desktop";
  };

  environment.sessionVariables.DEFAULT_BROWSER = "zen";

}