config: [
  (_final: prev: {
    lib = prev.lib // {
      mkIngressHost =
        { name, gated }:
        let
          inherit (prev.lib) types;
        in
        prev.lib.mkOption {
          type = types.nullOr types.str;
          default =
            if config.homelab.domain != null then
              if gated then "${name}.i.${config.homelab.domain}" else "${name}.${config.homelab.domain}"
            else
              null;
          description = "Hostname base for ${name} ingress (defaults to ${name}.i.<domain> if gated, ${name}.<domain> otherwise)";
        };
    };
  })
]