Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:python/openSUSE_Tumbleweed/devel:languages:python.repo
zypper refresh
zypper install python-ordered-set
Para openSUSE Factory zSystems execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:python/openSUSE_Factory_zSystems/devel:languages:python.repo
zypper refresh
zypper install python-ordered-set
Para openSUSE Factory PowerPC execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:python/openSUSE_Factory_PowerPC/devel:languages:python.repo
zypper refresh
zypper install python-ordered-set
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:python/15.6/devel:languages:python.repo
zypper refresh
zypper install python-ordered-set