libX11-xcb provides functions needed by clients which take advantage of
Xlib/XCB to mix calls to both Xlib and XCB over the same X connection.
.
More information about X.Org can be found at:
.
More information about XCB can be found at:
.
This module can be found at
git://anongit.freedesktop.org/git/xorg/lib/libX11