Code review comment for lp:~vorlon/ubuntu/saucy/sysvinit/lp.1184006

On Fri, May 31, 2013 at 06:28:28PM -0000, Steve Langasek wrote:
> Ok. Should I prepare the changes to clock-setup and ubiquity?

If you could, that would be great. Obviously if you don't have time
then let me know.

> > * I don't quite understand what "sed -i -e's/^UTC=.*/UTC=yes/'
> > /etc/default/rcS" is for. Is that so that dpkg conffile replacement
> > works? Would it be better to forcibly remove the option in the
> > postinst, instead or perhaps as well? Editing conffiles is of course
> > always a bit scary, so I suppose go with whatever approach
> > initscripts has historically taken here ...
>
> This is to suppress the wrong conffile replacement prompt, yes, by ensuring
> that the copy of the file on disk doesn't have any spurious delta caused by
> the UTC setting that we're moving out of the way. I'm confident that this
> part of the code is doing the right thing, neither incorrectly losing any
> user preferences nor mangling the file in a way that will *cause* conffile
> prompts incorrectly on upgrade. (This is a sed to UTC=yes, rather than a
> removal, because that ensures it matches the interim version of the conffile
> as shipped in the package currently in saucy, giving the correct results for
> both pre-saucy and saucy upgrades.)

OK. Most things relating to conffile mangling in maintainer scripts
still give me the shivers, but this seems reasonable enough.