[php-maint] Bug#614413: Bug#614413: Bug#614413: re buildd's resolver and package's build deps

[Roger Leigh]

On Thu, Mar 17, 2011 at 11:56:59AM +0100, Ondřej Surý wrote:
> tags 614413 +wontfix
> thank you
> 
> Hi,
> 
> just to reconfirm our position - I'm here with Sean and Raphael. (And
> BTW: Roger, very good work on that report, we just don't agree with
> the conclusion ;)).

Hi Ondřej,

That's fine.  I don't know if you saw the discussion on -devel and
-policy, but I have since revised this opinion in light of the
discussion, and this isn't a bug at all.  Feel free to close it
entirely :)

We subsequently adjusted the apt resolver to behave in the same way
as the internal resolver; that is, it prunes all alternatives and
only considers the first one, making it perfectly acceptable to use
alternatives.  (The behaviour is configurable; aptitude considers all
alternatives by default, so the alternatives can be used when building
e.g. experimental and backports, but won't be used for unstable.)

The only known difference now is that internal would skip the first
alternative if any of the alternatives were already installed.  apt
will still require the first to be present.  This difference will
only be seen if building in a dirty build environment, and nowadays
we use clean chroot snapshots so it won't be seen in practice.


Regards,
Roger

-- 
  .''`.  Roger Leigh
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