Comment # 33 on bug 1220592 from Caleb Crane

(In reply to Martin Wilck from comment #32)
> For me, the problem still occurs, apparently because I've set
> ZYPP_SINGLE_RPMTRANS=1. Before anyone asks, I know it's tech preview; I like
> the feature, and I have it enabled as sort of a "beta tester" to find issues
> with it, like I just did.
Do you have a set of preferred references for this feature? I personally don't
keep up to date with experimental zypper features, but I'm willing to explore
the merits of this feature.

> I assume that replacing %pre with %pretrans in Ben's fix would do the trick.
My observation has been that many packages are moving away from %pretrans to
%pre so I'm a little wary of going that direction without more research.