Packages with the xdg use flag

dev-perl / File-HomeDir : Get home directory for self or other user

  • Ensure XDG Semantics for returned paths via x11-misc/xdg-user-dirs

x11-wm / openbox : Standards compliant, fast, light-weight, extensible window manager

  • Install the python xdg files for xdg autostart

x11-wm / xpra : X Persistent Remote Apps (xpra) and Partitioning WM (parti) based on wimpiggy

  • Enable support for XDG-based menus