xdg-desktop-portal currently has no way of disabling the Inhibit portal
or ever returning an error to the application from it. Thus Flatpak
Firefox will never fall back to its Wayland backend. To remedy this,
let's actually implement the FDO Inhibit interface that the portal can
use.
DmaBuf monitor screencasting through xdg-dekstop-portal-gnome!
Somewhat limited currently, e.g. the cursor is always embedded. But gets
most of the job done.
Ivan Molodetskikh