虚包：xdg-desktop-portal-backend
This is a virtual package. See the Debian policy for a definition of virtual packages.
负责填实 xdg-desktop-portal-backend 的软件包
- xdg-desktop-portal-kde
- backend implementation for xdg-desktop-portal using Qt
- xdg-desktop-portal-wlr
- xdg-desktop-portal backend for wlroots