vte:2.91 is the only supported slot by upstream for a long time. It seems upstream ruby-gnome2 should support vte:2.91 since 2015, maybe this could be checked: https://github.com/ruby-gnome2/ruby-gnome2/commit/74740ad Thanks
I have added -r1 revisions for the ruby-vte3-3.0.x versions that depend on vte:2.91. The older versions should be disappearing soon once a 3.0.x version is stable, bug 587024
Thanks!