MarsSeed [1] filed a deletion request for tar-libarchive [2]: "Dummy package" as it calls itself. I've heard these are not allowed on AUR. Also this will potentially break a system, because it just replaces a low-level tool, GNU's tar, with libarchive. Libarchive's bsdtar does not implement all of GNU tar's functionality, and does not accept all parameters that tar does. The package 'tar' is part of [core] base metapackage, defining "a basic Arch Linux installation". So this PKGBUILD is only useful a private experiment for testing how a system could break with this change. But it has zero real-world, practical benefit. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/tar-libarchive/