Re: The following packages have been kept back:

Karl Auer:

> On Fri, 2009-07-31 at 08:00 -0400, Shannon McMackin wrote:
>> I thought dist-upgrade would only update your OS if you actually
>> changed the sources.list file to point to the next rev.
> 
> I don't believe that is the case, no. But I am not 100% certain. I'd
> be interested to know for sure - the man page for apt-get isn't clear
> on the point.

The important sentence wrt this point in apt-get's man page seems to be [1]
| The /etc/apt/sources.list file contains a list
| of locations from which to retrieve desired package files
To really perform a distribution upgrade, apt-get has to have access to
the packages of the new distribution. Which is not the case if the
corresponding respository sources are not listed in sources.list.

> The GUI update manager offers a distribution upgrade when one becomes
>  available, and I'm pretty sure that no alterations to sources.list
> are required before proceeding. Of course, the update manager may add
> the entries itself, *then* do the dist-upgrade.

Of course, the GUI update manager as well as the do-release-upgrade
command line tool will alter sources.list. That's part of what they're
designed to do. But even that is nothing that will happen out of the
blue - you have to start the distribution upgrade manually.
And it will definitely not happen just because of typing
apt-get dist-upgrade

[1] The man page should mention that repository sources in files located
under /etc/apt/sources.list.d are also taken into account. But that's of
no importance wrt this topic.

-- 
Regards
  mks

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