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Re: how to compare versions



Hideki Yamane <henrich@debian.or.jp> writes:

> Hi Matthew,
>
> On Wed, 3 Feb 2010 16:04:13 +1100
> Matthew Palmer <mpalmer@debian.org> wrote:
>> In short: you don't.
>> 
>> You should make it clear in the NEWS.Debian file that there are
>> compatibility issues, and your README.Debian should describe how to perform
>> an upgrade manually (or point to upstream documentation for same).  Users
>> who are specifically interested in upgrade compatibility issues should be
>> keeping an eye on the NEWS.Debian file for all the packages they upgrade
>> (via apt-listchanges); everyone else is assumed to not be that interested,
>> and should expect that incompatible upgrades may occur.
>
>  Yes, I should do so.
>
>  And I have a question - why should we avoid using pre-depends?
>  What kind of problem would it cause? 
>  (it doesn't mean I want to use pre-depends, just curious)

It adds additional strong restrictions on the order in which packages
must be upgraded. Too many such restrictions and there might not be a
way to upgrade at all. Somewhere before that you (via apt/aptitutde/...)
get the effect that you have to temporarily remove packages to upgrade.

The less restrictions there are on the order the easier it is to
upgrade.

MfG
        Goswin


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