FabioLolix [1] filed a deletion request for boost171 [2]: Installing this pkgbuild call for trouble, it has been noted 3 days after upload (2020-02-21) that this isn't interchangeable with boost in [Extra], installing this will break any Arch package that depends on boost and boost-libs and any AUR pkgbuilds built again Arch's boost [1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/boost171/