Для openSUSE Factory запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/openSUSE_Factory/security:SELinux.repo
zypper refresh
zypper install libselinux
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/16.0/security:SELinux.repo
zypper refresh
zypper install libselinux
Для 15.7 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.7/security:SELinux.repo
zypper refresh
zypper install libselinux
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/security:SELinux/15.6/security:SELinux.repo
zypper refresh
zypper install libselinux