Re: version 0.15 of autoupgrade script
On Tue, 27 Jan 1998, Craig Sanders wrote:
> I can't recall exactly which what gets overwritten. i should have taken
> notes last time i ran it but i didn't. i'll be building a new machine
> tomorrow at work so i'll take notes when i get up to upgrading it to hamm.
> i'll post a report tomorrow night.
Ok. Keep up the good work.
> force-overwrite works. i fail to see why some people dislike it so much.
> yes, there are problems in some packages (sometimes caused by single
> packages being split into two or more packages). --force-oerwrite gets
> around that problem and makes a dselect install/upgrade go smoothly for
> the user. it hasn't caused any problems (at least none that i know of)
> since it was made the default...and i've upgraded dozens of machines
> dozens of times each with dselect.
Of course it works most of the time. But you never know if the files are
the same. funny-manpages has an overlap with manpages-dev that could be
very annoying to a programmer, for instance.
I believe that every time --force-overwrite is needed, there is a bug in
some package that should be fixed. Most of the time the fix would be a
simple Conflicts: line in the control file, especially when a package is
partially replacing an older package.
Perhaps dpkg could be modified to ask the user if a file needs to be
replaced, in case --force-overwrite is not supplied? That would be
annoying, but at least less annoying than aborting the installation, IMO.
> IMO, that is more "correct" behaviour than forcing the user to manually
> install some packages with dpkg --force-overwrite when dselect is
> perfectly capable of handling the situation properly without manual
Perfectly capable, yes. But not very predictable. You never know in front
which of the two files you'll end up with if you install packages in a
> what all this means is that i am not at all keen to remove --force-overwrite
> from the script. i want my script to work, even if that means it isn't
> 100% politically correct.
Of course you want the script to work, and it should work. But a test run
without --force-overwrite would reveal any overlaps that exist. Bug
reports (severity: important) should then be filed against the overlapping
packages, so that the --force-overwrite won't be needed in the final
version that makes it into Debian 2.0.
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