MarsSeed [1] filed a deletion request for ros-build-tools [2]: This Python 2 based tool is not needed anymore, as there is a ros-build-tools-py3 package providing the same package name as this one. The 'Robot Operating System' supports Python 3.8+ so there is no reason to keep their Python 2 modules in AUR. Most of them are broken now. But they can be replaced with their Python 3 counterparts and they will work fine. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-build-tools/