If you want to use something like #dejadup to backup your #Kalpa system, at the moment, the flatpak won't work, as dejadup (and others) are leveraging gvfs on the host system, which isn't currently included by default in Kalpa.
transactional-update pkg in gfvs gvfs-backends will get this working for you.
But there's a chance that kwallet isn't going to play nice with libsecrets for storing your credentials.