Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:darix:apps/openSUSE_Tumbleweed/home:darix:apps.repo
zypper refresh
zypper install salt
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:darix:apps/16.0/home:darix:apps.repo
zypper refresh
zypper install salt
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:darix:apps/15.6/home:darix:apps.repo
zypper refresh
zypper install salt