Bug#387561: libffi package is long since obsolete, but libffi4-dev could Conflict: with it
"Kevin B. McCarty" <kmccarty@Princeton.EDU> writes:
> ...note that 2001 was before the release of woody. This package is so
> old that it shouldn't still be on anyone's system and Debian doesn't
> actually need to support it. (The submitter may want to check for
> "Obsolete and locally created packages" in aptitude once in a while.)
> I'm guessing libffi4-dev maintainers will just close this bug.
This is incorrect reasoning.
Old packages do not get automatically deleted, and there's no reason
to think this one would have been.