`module Debug_in_this_directory = Async_kernel__.Debug`
`module Time_ns_in_this_directory = Async_kernel__.Time_ns`
`module Debug = Debug_in_this_directory`
`module Time_ns = Time_ns_in_this_directory`
`module Epoll_max_ready_events = Async_kernel.Async_kernel_config.Epoll_max_ready_events`
`module Max_inter_cycle_timeout = Async_kernel.Async_kernel_config.Max_inter_cycle_timeout`
`module Max_num_open_file_descrs = Async_kernel.Async_kernel_config.Max_num_open_file_descrs`
`module Max_num_threads = Async_kernel.Async_kernel_config.Max_num_threads`
`module Max_num_jobs_per_priority_per_cycle = Async_kernel.Async_kernel_config.Max_num_jobs_per_priority_per_cycle`
`val concat : ?⁠sep:Core_kernel.String.t ‑> Core_kernel.String.t list ‑> Core_kernel.String.t`
`val eprint : Core_kernel__.Import.string ‑> Core_kernel__.Import.unit`
`val eprint_s : Core_kernel.Sexp.t ‑> Core_kernel__.Import.unit`
`val eprints : Core_kernel__.Import.string ‑> 'a ‑> ('a ‑> Core_kernel.Sexp.t) ‑> Core_kernel__.Import.unit`
`val print_s : Core_kernel.Sexp.t ‑> Base.unit`
`val sec : Core_kernel__.Import.float ‑> Time_ns.Span.t`
`module Thread : sig ... end`
`module Unix : sig ... end`