gnome-screenshot hard depends on X11
And fails to build in wayland-only systems
$ git grep gdkx
src/screenshot-application.c:#include <gdk/gdkx.h>
src/screenshot-utils.h:#include <gdk/gdkx.h>
And fails to build in wayland-only systems
$ git grep gdkx
src/screenshot-application.c:#include <gdk/gdkx.h>
src/screenshot-utils.h:#include <gdk/gdkx.h>