Comment # 13 on bug 1219562 from Stefan Hundhammer

> If packages
> were downloaded in advance, libzypp/zypper and their dependencies should be
> below /var/cache/zypp/packages and could be installed with rpm.

OK, that seemed to work:

> cd /var/cache/zypp/packages
> rpm -Uhv ./download.opensuse.org-oss/x86_64/libzypp-17.31.28-1.5.x86_64.rpm ./download.opensuse.org-oss/x86_64/zypper-1.14.68-1.3.x86_64.rpm ./download.opensuse.org-oss/x86_64/libzypp-devel-17.31.28-1.5.x86_64.rpm ./download.opensuse.org-oss/x86_64/libsolv-devel-0.7.28-1.3.x86_64.rpm ./download.opensuse.org-oss/x86_64/libsolv-tools-0.7.28-1.3.x86_64.rpm


-> zypper works again

Now executing another

  zypper dup

(without -y')