On 2009-08-07 17:39 +0200, Luk Claes wrote: > Sven Joachim wrote: >> Here is a scenario in which I could reproduce this bug. In a Lenny >> chroot, I installed mksh and ran "dpkg-reconfigure mksh" to let it point >> at /bin/sh. Upgrading to Squeeze, I confirmed the question to let dash >> provide /bin/sh. This brought up another debconf screen: >> >> >> ┌─────────────────────────────────────┤ Configuring mksh >> ├──────────────────────────────────────┐ >> │ >> │ >> │ Cannot install mksh as /bin/sh! >> │ >> │ >> │ >> │ Because dash has already been configured to be installed as /bin/sh, mksh >> cannot be │ >> │ installed as /bin/sh. Use "dpkg-reconfigure dash" to change dash to not >> install as /bin/sh, │ >> │ then "dpkg-reconfigure mksh" to install mksh there. >> │ >> │ >> │ >> │ <Ok> >> │ >> │ >> │ >> >> └───────────────────────────────────────────────────────────────────────────────────────────────┘ >> >> Unpacking dash failed then: >> >> ,---- >> | Unpacking dash (from .../dash_0.5.5.1-2.3_i386.deb) ... >> | dpkg: error processing /var/cache/apt/archives/dash_0.5.5.1-2.3_i386.deb >> (--unpack) >> | trying to overwrite `/usr/share/man/man1/sh.1.gz', which is also in >> package bash >> `---- > > Because mksh apparently does not divert the manpage...
It does: ,---- | # LANG=C dpkg -S man1/sh.1 | diversion by mksh from: /usr/share/man/man1/sh.1.gz | diversion by mksh to: /usr/share/man/man1/sh.distrib.1.gz | bash: /usr/share/man/man1/sh.1.gz `---- >> And /bin/sh still pointed at mksh. The only way to resolve this was to >> "dpkg-reconfigure mksh" again to let it _not_ provide /bin/sh, after >> which the upgrade succeeded. > > The postinst did not even run because the unpack failed... True. >> I haven't analyzed this in detail, but I suppose this situation will >> occur whenever /bin/sh is diverted and points to something else than >> dash. > > It's something fishy with the manpage, apparently it did not run the > preinst of dash next to mksh not diverting the manpage or something like > that? I suppose dash's preinst ran, because dpkg tried to unpack dash after all... Sven -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
