Lwt module type definitions for Mirage-compatible applications

This is a virtual package that pulls in all the concrete dependencies required for the mirage-types.lwt ocamlfind package to become available.

The purpose of this library is to provide concrete types for several that are left abstract in mirage-types, including but not limited to:

• type 'a io = 'a Lwt.t
• type page_aligned_buffer = Io_page.t
• type buffer = Cstruct.t
• type macaddr = Macaddr.t