type t = (module Irmin.Hash.S)val add : string -> ?default:bool -> (module Irmin.Hash.S) -> unitval find : string -> tval term : t option Cmdliner.Term.tResolver.Hashtype t = (module Irmin.Hash.S)val add : string -> ?default:bool -> (module Irmin.Hash.S) -> unitval find : string -> tval term : t option Cmdliner.Term.t