On Fri, 2 Mar 2018, 10:54 p.m. Daniel Sperka, <djspe...@ucdavis.edu> wrote:
> It seems that under stretch, libvtk5 has been replaced by libvtk6, and > libpng12 by libpng16. > This is the *very* reason for which -dev packages shouldn't contain the soversion... Given that you are using cowbuilder, which respects the alternative build-dependencies, just put the all separated by |, in the meantime hoping they will become unversioned in the future.