diabonas [1] filed a deletion request for aufs [2]: This package depends on "linux-aufs_friendly", which has been deleted long ago (PRQ#12619, https://lists.archlinux.org/pipermail/aur- requests/2018-September/026636.html). Without this dependency, the package is useless. An actively maintained alternative "linux-aufs" exists in the AUR.
[1] https://aur.archlinux.org/account/diabonas/ [2] https://aur.archlinux.org/pkgbase/aufs/
