For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:Factory:git-workflow:staging:mcepl:swipl:7/openSUSE_Tumbleweed/devel:Factory:git-workflow:staging:mcepl:swipl:7.repo
zypper refresh
zypper install swipl
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:Factory:git-workflow:staging:mcepl:swipl:7/openSUSE_Factory/devel:Factory:git-workflow:staging:mcepl:swipl:7.repo
zypper refresh
zypper install swipl