Re: [gentoo-dev] Dynamic SLOTs

[Jason Stubbs <jstubbs@gentoo.org>]

On Saturday 07 August 2004 20:07, Chris Bainbridge wrote:
> On Saturday 07 August 2004 00:57, Jason Stubbs wrote:
> > Even with all that, a full dependency tree is built with all circular
> > dependencies resolved in about 6 seconds, where currently emerge takes
> > about 2 seconds. I can't see a way to get USE-based SLOTs in without at
> > least doubling that figure (which is incidentally the time that 2.0.50
> > took). I'm open to suggestions on how to get around it.
>
> Maybe I'm not understanding this fully, but couldn't you just compute the
> dependency tree once and then cache it? And allow quick updates to the
> cached info by only editing dependency links for a single ebuild when it
> changes. You'd need to cache the dependencies for different sets of use
> flags as well.

The dependencies of a single package with a single set of conditions don't 
take long to calculate. The issue is that, real soon, packages are going to 
be able to specify some of those conditions for other packages. Figuring out 
the best combination of packages/conditions and whether it is indeed possible 
(ie. no conflicts) is what takes the time.

Regards,
Jason Stubbs

--
gentoo-dev@gentoo.org mailing list