For openSUSE Leap 15.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/openSUSE_Leap_15.2/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For openSUSE Leap 15.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/openSUSE_Leap_15.1/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For openSUSE Leap 15.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/openSUSE_Leap_15.0/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/openSUSE_Factory/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/15.6/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/15.5/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/15.4/home:AndnoVember:test.repo
zypper refresh
zypper install gnustep-base