libxen-dev 4.5.1-0ubuntu1 (i386 binary) in ubuntu wily

 This package contains the public headers and static libraries for Xen.
 .
 The libxenlight library is intended as a common base for all Xen toolstack
 developers. The libxlutil library contains additional helpers which may
 be useful to toolstack developers.
 .
 The libxenstore library allows userspace processes to interact with the
 XenStore database. XenStore is a shared database used for interdomain
 communication of configuration and status information. It is accessible
 to all domains running on the same Xen host. See
 http://wiki.xen.org/wiki/XenStore for more information.
 .
 The libxenctrl and libxenguest libraries are internal libraries intended
 for use by the Xen toolstack and are not intended to be used directly.
 Toolstack authors should use libxenlight.