Not really at all. Anything can use the XDG spec, it has absolutely no coupling to systemd. Really it's about apps chosing between - use some form of $APPDIR v

Not really at all. Anything can use the XDG spec, it has absolutely no coupling to systemd. Really it's about apps chosing between - use some form of $APPDIR variable convention - using some app-specific $MYAPP_CONFIG variable (ick, but at least it's configurable) - just dump it in $HOME and pollute that top level namespace