Adam D. Barratt <adam@adam-barratt.org.uk> (2013-08-19):
From a quick look at the dependencies, I'm not sure how easy adding
that support would be. The -sdl packages don't have any positive
dependencies on the newer versions of the other packages, which is
what britney uses to compute "excuse dependencies", and in turn what
the autohinter uses to deduce relationships for hinting purposes.
I guess she'd need to do something along the lines of "there's a new
Breaks/Conflicts which affects the testing version of the broken
package but not the sid version, maybe I should try adding that
package as well". I don't think that fits in nicely with the current
code, but I'm happy to be proved wrong...
We could also just consider this kind of cases doesn't happen
frequently
enough to bother, and let people report bugs like Sven did. Deal?