MarsSeed [1] filed a deletion request for ros-noetic-slam-gmapping [2]: Broken, unused package from 2020. This toolkit is also EOL/unmaintained since same year. [a]
[a]: http://github.com/ros-perception/slam_gmapping/tags [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-noetic-slam-gmapping/
