MarsSeed [1] filed a deletion request for ros-melodic-opencv3-native [2]: Orphan from 2020, "# Fake package to convince ROS to use the native opencv3 package." But it does not depend on opencv3, and it is actually an empty package, not a shim. Nothing depends on it, and ROS Melodic is EOL. None of its packages from AUR get built anymore by the project. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-melodic-opencv3-native/