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

[Manuel A. Fernandez Montecelo]

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.


> I think that this is not a good excuse. The system should offer a way
> to exclude downgrades whatever the context.

You think that and I don't think so, that's why is both a wishlist and
a wontfix.


Cheers.
-- 
Manuel A. Fernandez Montecelo <manuel.montezelo at gmail.com>