qt5-xdgdesktopportal-platformtheme 5.12.4+dfsg-4ubuntu1 (i386 binary) in ubuntu eoan

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This package provides the XDG Desktop portal platform theme, which makes
 Qt use native file dialogs on Flatpak/Snap based environments.