MarsSeed [1] filed a deletion request for aarch64-linux-gnu- gcc49-linaro-bin [2]: Nothing requires this abandoned orphan compile toolchain package from 2017. There are newer aarch64 gcc toolchain packages, not just in repo but on AUR as well, including a more recent Linaro toolchain. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/aarch64-linux-gnu-gcc49-linaro-bin/