MarsSeed [1] filed a deletion request for ros-noetic-tuw-gazebo-msgs [2]: Unmaintained, unused, broken package from 2020. Based on Python2, which is not on its dependency graph. EOL since 2020. [a] 0 votes/comments/pkgstats. [a]: http://github.com/tuw-robotics/tuw_msgs/tree/noetic/tuw_gazebo_msgs [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-noetic-tuw-gazebo-msgs/