Re: use of "invoke-rc.d $PACKAGE stop || exit $?" in prerm scripts

[Ian Jackson <ian@davenant.greenend.org.uk>]

Francesco P. Lovergine writes ("Re: use of "invoke-rc.d $PACKAGE stop || exit $?" in prerm scripts"):
> Unfortunately sometimes the daemon does not stop for an error in the
> maintainer script and that prevents upgrading for ever, even when
> the package has been corrected.  [...]

If the old package's prerm fails, dpkg tries the version from the new
package instead, precisely to avoid this problem.  See the policy
manual for details.

Ian.