MarsSeed [1] filed a deletion request for ros-catkin [2]: This seems like an EOL version of the Robot Operating System's build tool, catkin. Package last updated in 2019, it is defunct because of a missing dependency. AUR has newer versions of this tool, specific to ROS releases: * ros-melodic-catkin (for ROS 'Melodic' LTS 2018) * ros-noetic-catkin (for ROS 'Noetic' LTS 2020) As nothing depends on this deprecate package, I suggest to delete it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-catkin/