wayland from KDE:Unstable:Frameworks project
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Add repository and install manually
For openSUSE Leap 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Unstable:Frameworks/openSUSE_Leap_15.5/KDE:Unstable:Frameworks.repo zypper refresh zypper install wayland