It doesn't of course. The debian changelog says that debian/dzproduct was changed for zope 2.9 and that files were patched. dzproduct wasn't updated though - let's hope the files were patched. This is a debdiff that may fix the issue
** Attachment added: "debdiff" http://librarian.launchpad.net/4932429/squishdot.diff -- [UNMETDEPS] squishdot has unmet dependencies https://launchpad.net/bugs/65474 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
