sig
type 'a t
val empty : 'a Package.Set.t
val is_empty : 'a Package.Set.t -> bool
val add : 'a Package.Name.t -> 'a Package.Set.t -> 'a Package.Set.t
val from_list : 'a Package.Name.t list -> 'a Package.Set.t
val mem : 'a Package.Name.t -> 'a Package.Set.t -> bool
val exists : ('a Package.Name.t -> bool) -> 'a Package.Set.t -> bool
val iter : ('a Package.Name.t -> unit) -> 'a Package.Set.t -> unit
val cardinal : 'a Package.Set.t -> int
val elements : 'a Package.Set.t -> 'a Package.Name.t list
val fold : ('a Package.Name.t -> 'b -> 'b) -> 'a Package.Set.t -> 'b -> 'b
val filter :
('a Package.Name.t -> bool) -> 'a Package.Set.t -> 'a Package.Set.t
val for_all : ('a Package.Name.t -> bool) -> 'a Package.Set.t -> bool
end