xdg-desktop-portal-dev 1.16.0-2ubuntu1 (armhf binary) in ubuntu lunar

 xdg-desktop-portal provides a portal frontend service for Flatpak, Snap,
 and possibly other desktop containment/sandboxing frameworks. This service
 is made available to the sandboxed application, and provides mediated
 D-Bus interfaces for file access, URI opening, printing and similar
 desktop integration features. See the xdg-desktop-portal package's
 description for more details.
 .
 This package contains development files for backends such as
 xdg-desktop-portal-gtk.