liblwt-glib-ocaml 2.5.2-2 (armhf binary) in ubuntu artful

 Lwt is a library for cooperative threads implemented in a monadic style.
 Unlike preemptive threads, cooperative threads do not use a scheduler to
 distribute processor time between threads. Instead, each thread must
 announce that it wants to let the others run.
 .
 This package contains runtime libraries for programs using Lwt with
 cooperative GLib.