bison-2.2 (Yes, that is the package name - I purposely renamed it so it doesn't have any conflicts from the older one in the SDK repo) uploaded to extras-devel. I've correctly made the package remove the old version of bison that is from the SDK repo but Scratchbox will override it with its internal old-*** 1.85 version.

But specifying bison-2.2 as a build-dep will get some of the bison problem sorted (now, just figure out a way to override sbox's bison ).