You can search for identifiers within the package.
in-package search v0.2.0
pgx_lwt
pgx_lwt__.ml
1 2 3 4 (* generated by dune *) (** @canonical Pgx_lwt.Io_intf *) module Io_intf = Pgx_lwt__Io_intf
1 2 3 4
(* generated by dune *) (** @canonical Pgx_lwt.Io_intf *) module Io_intf = Pgx_lwt__Io_intf