MarsSeed [1] filed a deletion request for ros-noetic-turtlebot3-slam [2]: Unmaintained since 2022; unused, obsolete.
ROS1 (Noetic) packages are EOL and no longer compatible with Arch Linux, only with Python 3.9, Qt 5.12 and the freshly EOL Ubuntu 20.04 LTS. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ros-noetic-turtlebot3-slam/
