kernel-source from home:Ximi1970:Kernel:Virtualization:openSUSE-15.4:Staging project
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Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Ximi1970:Kernel:Virtualization:openSUSE-15.4:Staging/15.4/home:Ximi1970:Kernel:Virtualization:openSUSE-15.4:Staging.repo zypper refresh zypper install kernel-source