nix/nixos/containers/rdesktop.nix

{ username, stateVersion, desktop, ... }: {
  networking.firewall.allowedTCPPorts = [ 3390 ];

  containers.rdesktop = {
    autoStart = true;
    privateNetwork = false;
    specialArgs = { inherit username stateVersion desktop; };
    config = { config, pkgs, lib, username, stateVersion, desktop, ... }: {
      networking.hostName = "nixos-rdesktop";
      system.stateVersion = stateVersion;

      imports = [
        ../common/desktops/${desktop}
        ../users/${username}
      ];

      networking.firewall = {
        enable = true;
        allowedTCPPorts = [ 3390 ];
      };  

      services.xrdp = {
        enable = true;
        openFirewall = true;
        port = 3390;
        defaultWindowManager = "xfce4-session";
      };
    };
  };
}