MarsSeed [1] filed a deletion request for ros-melodic-velodyne- simulator [2]: Unneeded orphan metapackage from 2021. Also ROS Melodic is EOL since 2023-06, and almost all ROS Melodic dependencies are unmaintained on AUR since 2021. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-melodic-velodyne-simulator/