I have a library package at version 2.01, and the soversion in it is 0.0.0 (seems upstream hadn't heard about library versioning). Now, I'm considering packaging a new upstream version (2.3.4, still in prerelease though), but they *still* haven't heard about library versioning, so compiling the new source still just yields 0.0.0. And the new version is binary-incompatible with the old release (some C++ classes changed).
What course of action is recommended here? I guess that perhaps I could hack the upstream makefiles to add some library version, but then which version to use? Or just rename the library? Hmm... or simply drop the old version, since I seem to maintain all the packages that currently depend on it anyway?