The dep-wait for zipper.app on renaissance >> 0.9.0-2 looks wrong as this is a a dummy arch:all package, so it didn't get binNMUed. Please make that librenaissance0-dev >> 0.9.0-2, although it's not clear to me whether this will be sufficient (+b2 is the binNMUed version for the current GNUstep transition, +b1 was during the previous one last year). Thanks.