Re: [gentoo-dev] example conversion of gentoo-x86 current deps to unified dependencies

[Michał Górny]

On Sat, 15 Sep 2012 18:20:26 -0700
Brian Harring <ferringb@×××××.com> wrote:

> On Sun, Sep 16, 2012 at 12:03:36AM +0200, Micha?? G??rny wrote:
> > On Sat, 15 Sep 2012 13:33:18 -0700
> > Brian Harring <ferringb@×××××.com> wrote:
> > > To demonstrate the gain of this, we basically take the existing
> > > tree's deps, and re-render it into a unified DEPENDENCIES form.
> >
> > But in order to do this, we first have to decide exactly what kind
> > of dependencies do we want to have. Then convert the tree to
> > a separate-variable form with new dependencies. Then we can compare
> > it with the DEPENDENCIES form and decide which one is better.
>
> Funny you mentioned that, I just finished tweaking pquery to generate
> real world example unified dependencies; these *are* accurate, just
> to be clear.

But consider that for example Zac & AxS (correct me if I recall it
correctly) considered making changing the meaning of RDEPEND to install
them before the build, thus effectively making 'build,run' useless.

> Total cache savings from doing this for a full tree conversion, for
> our existing md5-cache format is 2.73MB (90 byes per cache entry).
> Calculating the savings from the ebuild/eclass standpoint is
> dependent on how the deps are built up, so I skipped that.

You're storing the cache in a tarball?

-- 
Best regards,
Michał Górny