Hello Guix!

This patch-set is to make changes to telegram-desktop and its related 
packages.

The updated version of telegram-desktop doesn't build at the moment. It 
appears to be requiring newer version of gtk3, as there is a missing 
symbol 'gdk_x11_window_get_xid'.

The updated gtk3 is in core-updates. I'll retest this patch-test after 
next core-updates --> master merge.

Regards,
RG.