From javibarroso at gmail.com  Fri Jul 12 12:39:47 2013
From: javibarroso at gmail.com (Javier Barroso)
Date: Fri, 12 Jul 2013 14:39:47 +0200
Subject: [Cupt-user] autoremoval of too much packages
In-Reply-To: <20130701155829.GA10823@debian-w500.Elisa>
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 <20130701155829.GA10823@debian-w500.Elisa>
Message-ID: <CAL5yMZTRh-5K_GbTNe8yPk3gRXqR=OrY2jrQyLbeEpcO9co3+w@mail.gmail.com>

On Mon, Jul 1, 2013 at 5:58 PM, Eugene V. Lyubimkin <jackyf at debian.org> wrote:
> Hi Javier,
>
> 2013-07-01 16:54, Javier Barroso:
>> # cupt install cupt  # want to remove some packages from my computer
>> that it is being used  (gdm3 for example)
>> # apt-get install cupt # will install cupt correctly
>> # aptitude install cupt # will install cupt correctly too
>>
>> See the attached output, I'm not sure if I should open a new bug or
>> this behaviour is by design
>>
>> After upgrading cupt with aptitude, cupt upgrade want to remove many
>> pakages when I full-upgrade, but dist-upgrade from apt is sane.
> [...]
>
> Cupt never (modulo possible bugs) autoremoves packages which are
> used, as in, either marked as manually installed or (directly or
> indirectly) required by some another used package.
>
> If Cupt sees some package as not needed, that means it is marked as
> automatically installed and it's not required for any other packages.
>
> Cupt tries hard to keep the system clean from unneeded packages and uses
> a different and more aggressive algorithm than other package managers to
> find such packages, that's why sometimes it suggests more packages for
> autoremoval than other package managers. It's not a bug.
>
> To ensure that Cupt (and other package managers including e.g. APT) get
> the precise data regarding what packages are wanted by user, you should
> check the respective lists [1] and modify them if needed. All packages
> you (as user) need should be marked as manually installed.
>
> In your case, it will be like
>
> $ cupt unmarkauto gdm3 <...other packages as needed...>
>
>
> [1]
> http://people.debian.org/~jackyf/cupt2/tutorial.html#automatically_installed_packages

Thank you Eugene, I see the difference (between aptitude and cupt
behaviour)  is suggested packages. I will configure cupt to maintain
that packages

See you