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Re: More info - was [Re: Synaptic fails to fix broken packages]

On Fri, 5 Oct 2018 04:57:36 -0500
Richard Owlett <rowlett@xxxxxxxxxxx> wrote:

> Can someone point me to a discussion of why one would chose a
> particular option?

The important difference is that 'upgrade' (aptitude safe-upgrade) will
not remove a package without replacing it with a more up-to-date
version of the same package. 'Dist-upgrade' (aptitude full-upgrade)
may remove packages permanently where they have been superseded by
different packages, or a combination thereof, or where they have been
withdrawn from the distribution and were not manually installed.

There should be no significant difference with the stable distribution,
which should never alter its architecture, but that's something that
happens frequently with unstable and testing. Using dist-upgrade
without due care and attention in those distributions is risky. Having
said that, the default method of Synaptic is dist-upgrade, and failing
to use dist-upgrade at least some of the time will leave unstable or
testing out of date, only partially upgraded.