include Ppx_sexp_conv_lib.Sexpable.S with type t := t
val t_of_sexp : Sexplib0.Sexp.t -> tval sexp_of_t : t -> Sexplib0.Sexp.tval sysname : t -> stringval nodename : t -> stringval release : t -> stringval version : t -> stringval machine : t -> string