You can search for identifiers within the package.
in-package search v0.2.0
ppx_hash.runtime-lib
Ppx_hash_lib
module Std : sig ... end
This module is for use by ppx_hash, and is thus not in the interface of Base.
type 'a hash_fold = Base.Hash.state -> 'a -> Base.Hash.state
module Hashable : sig ... end