libqt5xcbqpa5-dbgsym 5.5.1+dfsg-10ubuntu2 (amd64 binary) in ubuntu xenial

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This module provides XCB integration used on regular desktop Linux platforms.
 Applications that can't work in anything but X should consider depending on
 this lib.