type t = Macaddr.tval sexp_of_t : Macaddr.t -> Sexplib0.Sexp.tval t_of_sexp : Sexplib0.Sexp.t -> Macaddr.tMacaddr_sexpserialisers to and from Macaddr and s-expression Sexplib0 format
To use these with ppx-based derivers, simply replace the reference to the Macaddr type definition with Macaddr_sexp instead. That will import the sexp-conversion functions, and the actual type definitions are simply aliases to the corresponding type within Ipaddr. For example, you might do:
type t = {
  ip: Ipaddr_sexp.t;
  mac: Macaddr_sexp.t;
} [@@deriving sexp]The actual types of the records will be aliases to the main library types, and there will be two new functions available as converters.
type t = {
  ip: Ipaddr.t;
  mac: Macaddr.t;
}
val sexp_of_t : t -> Sexplib0.t
val t_of_sexp : Sexplib0.t -> ttype t = Macaddr.tval sexp_of_t : Macaddr.t -> Sexplib0.Sexp.tval t_of_sexp : Sexplib0.Sexp.t -> Macaddr.t