Trying to install x2go nightly on opensuse leap 15, I tried:
zypper ar http://packages.x2go.org/opensuse/15/extras x2go-extras
zypper ar http://packages.x2go.org/opensuse/15/heuler x2go-nightly
But then: zypper search x2go does not return anything
cfg x2go also fails and it bitches about the x2go repositories being
invalid.
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