Actually put the module into the attrset that we build with tsp.container, which is nice, though it doesn't actually gain us anything in terms of making it nicer to include services in system config: still at:
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      (pkgs.tsp.module /root/services/erlinetrc.nix)
    ];

  services.lxc.myerlinetrc.enable = true;

But it's not clear that can be improved. However, this might make it possible for enabling one service to enable another, which would be pretty cool.

Also correct a mistake with the lxc console log.