{ pkgs, ... }: {
  # Enabling Gnome causes the machien to sleep.  Disable all of these.
  systemd.targets.sleep.enable = false;
  systemd.targets.suspend.enable = false;
  systemd.targets.hibernate.enable = false;
  systemd.targets.hybrid-sleep.enable = false;

  services.xrdp = {
    enable = true;
    defaultWindowManager = "${pkgs.xfce.xfce4-session}/bin/startxfce4";
    openFirewall = true;
    confDir = "/etc/xrdp/conf";
  };  

  environment.systemPackages = [
    pkgs.xrdp
    pkgs.xorg.xinit
  ];

  # XRDP needs IPv6 disabled to function.
  boot.kernel.sysctl = { 
    "net.ipv6.conf.enp0s13f0u1.disable_ipv6" = true;
    "net.ipv6.conf.all.disable_ipv6" = true;
    "net.ipv6.conf.wlp170s0.disable_ipv6" = true;
  };
}