FabioLolix [1] filed a deletion request for libc++-msan [2]: libc++ version stuck at v3.6.0, last is 9.0.1. Last update on 2015-08-22, 3 old votes, no comments [1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/libc++-msan/