val registerAliaser : (string -> unit) -> unit
(* Register a callback for an alternate hostname that is configured. *)
+ val logDir : {user : string, node : string, vhostId : string} -> string
+ (* Where is a vhost's log directory located? *)
+
+ val defaults : (string * Ast.typ * (unit -> Ast.exp)) list
+ (* Default environment variables *)
end