On Mon, Sep 05, 2011 at 07:17:05PM +0200, Sven Joachim wrote: > as requested in bug #631592[1], we (ncurses maintainers) are going to > split out a new library package named libtinfo5 from the ncurses source > package and link both libncurses5 and libncursesw5 against that library. > This raises a small problem for upgrades from previous libncurses5 > versions:
> If the new libncurses5 is unpacked before libtinfo5, there is a time > window during which programs using symbols that have been moved to > libtinfo5 will not be able to start. Since this includes bash, that > could be rather bad, especially if bash is /bin/sh. > To rule out this possibility, I would like to add an unversioned > "Pre-Depends: libtinfo5" to libncurses5. In my tests, apt did install > libtinfo5 before unpacking the replacement libncurses5 anyway, so this > is mostly meant as a safety guard against an unlikely situation. I do > not expect any upgrade problems to arise from that Pre-Dependency. You are correct that nothing here ensures that libtinfo5 will always be unpacked before the new libncurses5, and the only way to enforce this is to have libncurses5 Pre-Depend on libtinfo5. So I think this is the right course of action. Cheers, -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ slanga...@ubuntu.com vor...@debian.org
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