kwin6 from home:simotek:Frameworks project
Select Your Operating System
Add repository and install manually
For KDE Frameworks openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:simotek:Frameworks/KDE_Frameworks_openSUSE_Tumbleweed/home:simotek:Frameworks.repo zypper refresh zypper install kwin6