For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Guillaume_G:PAC_BTI/openSUSE_Factory_PowerPC/home:Guillaume_G:PAC_BTI.repo
zypper refresh
zypper install 7zip
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Guillaume_G:PAC_BTI/openSUSE_Factory/home:Guillaume_G:PAC_BTI.repo
zypper refresh
zypper install 7zip
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Guillaume_G:PAC_BTI/15.5/home:Guillaume_G:PAC_BTI.repo
zypper refresh
zypper install 7zip