virt-manager from Virtualization:openSUSE42.1 project
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Add repository and install manually
For openSUSE Leap 42.1 Update run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:openSUSE42.1/openSUSE_Leap_42.1_Update/Virtualization:openSUSE42.1.repo zypper refresh zypper install virt-manager