I decided to try in on top of my Leap system, just like that, to escape the need for all the tweaking. Removed the something like 20 repos in Yast, issued the command shown and populated the list with the ones below it: rm /etc/zypp/repos.d/* zypper ar --refresh http://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/b... base-oss zypper ar --refresh http://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/b... base-non-oss zypper ar --refresh -p 80 http://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/s... update zypper ar --refresh --disable http://cdn.opensuse.org/repositories/openSUSE:/ALP:/Experimental:/Slowroll/b... base-src-oss zypper ar --refresh http://codecs.opensuse.org/openh264/openSUSE_Tumbleweed/ h264 zypper ar --refresh -p 70 http://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Slowroll/Essentials/ packman Then issued a zypper dup. There was a lot of "chose one of the following" but in the end it coughed up a 9000 package proposal which I declided only because of my presently limping internet connection. My son is bringing me a TW iso, I might do an upgrade with that before trying again.