angryBird [1] filed a deletion request for xen-4.4 [2]: Deprecated and duplicate package. The current version of xen is also in the AUR under https://aur.archlinux.org/packages/xen/ . [1] https://aur.archlinux.org/account/angryBird/ [2] https://aur.archlinux.org/pkgbase/xen-4.4/