gtk-layer-shell from X11:Wayland project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Wayland/openSUSE_Tumbleweed/X11:Wayland.repo zypper refresh zypper install gtk-layer-shell
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/X11:Wayland/15.4/X11:Wayland.repo zypper refresh zypper install gtk-layer-shell