[Aptitude-devel] Bug#762932: aptitude Bug#762932: With Aptitude::ProblemResolver::SolutionCost=removals, aptitude full-upgrade chooses to downgrade a package

[Vincent Lefevre]

On 2016-04-05 15:26:38 +0100, Manuel A. Fernandez Montecelo wrote:
> 2016-04-05 15:21 GMT+01:00 Vincent Lefevre <vincent at vinc17.net>:
> > On 2016-04-05 13:42:49 +0100, Manuel A. Fernandez Montecelo wrote:
> >> So after studying this for a while, this is normal behaviour when using
> >> "removals", which only pays attention to minimise the number of
> >> removals, no matter any other considerations like upgrades, downgrades,
> >> or prefering packages with higher priorities.
> >
> > Well, there are two issues:
> >
> > 1. The documentation /usr/share/doc/aptitude/html/en/ch02s03s04.html
> > does not mention downgrades at all. So, since downgrades are not
> > supported by Debian, the user is right to assume that downgrades
> > will never be proposed. If aptitude proposes downgrades, then this
> > MUST be documented.
> >
> > 2. There should be a way to avoid downgrades completely.
> 
> Not going to happen, as explained in previous messages.

No, this was not explained at all. So, why "Not going to happen"?
What's the problem with offering this choice to the user?

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