Parameter Make.Loader

module type CONNECTION = Caqti_connection_sig.S with type 'a fiber := 'a System.Fiber.t and type ('a, 'e) stream := ('a, 'e) System.Stream.t
module type DRIVER = Driver_loader.DRIVER with type 'a fiber := 'a System.Fiber.t and type ('a, 'e) stream := ('a, 'e) System.Stream.t and type switch := System.Switch.t and type stdenv := System.stdenv
val provides_unix : bool
val find_and_apply : string -> (module DRIVER) option