Re: [gentoo-dev] system profiles, stackable profiles, virtuals, and dependencies

[Paul Varner]

On Sun, 2004-07-25 at 03:12, Marius Mauch wrote:
> On 07/25/04  Ned Ludd wrote:
> > On Wed, 2004-07-21 at 16:02, Seemant Kulleen wrote:
> > > As far as cascading profiles are concerned -- we don't have any way
> > > to add custom stuffs to the profiles (yet?).
> >
> > Sure we do..
> > User symlinks his/her make.profile to the right cascading profile in
> > ../../usr/portage/profiles/${profile_name} then fills his/her
> > /etc/portage/virtuals with all the fun files he/she wants to swapped
> > out for what the profiles/${profile_name}/arch/.. would provide.
> >
> > This combined with a user supplied overlay can be quite powerful for
> > rapid deployment and allow for alot of custom build scenarios.
> >
> Hmm, I must have overseen that mail and ciaranm will probably kick me
> for mentioning it, but you always have /etc/portage/profile as the
> topmost level on the profile stack with the same rights and duties as
> all other profiles, independent if you actually use
>     profiles/default-linux/x86/2004.0
> or
>     profiles/default-x86-2004.0 (adjust to your environment).


This is the approach that I've been taking.  What I'm missing is how to
effectively use /etc/portage/profile to implement *my* changes to my
chosen profile.

Backing up a step. I'm using portage-2.0.51_pre13 and make.profile is
symlinked to profiles/default-x86-2004.  I have created
/etc/portage/virtuals with the packages that I want to satisfy a
virtual.

Now, this is where I hit the stumbling block.  My definition of what
should be part of system and the official Gentoo definition are
different.  In this specific case, I consider both a cron package and a
system logger to be system software (i.e. part of the system profile and
not part of the world file).  I know that cascading profiles exist from
hanging out here in gentoo-dev, but I have been unable to find any
documentation on using them from a user perspective.  So in this case,
how do I add virtual/cron and virtual/logger to *my* system profile?

As a side note, knowing how to do this also benefits "Enterprise
Gentoo".  If defined correctly, it becomes a lot easier to build/rebuild
systems containing the same packages on multiple machines.  Since I can
now define a desktop profile, a server profile, etc.  If it's
configurable enough I could even go so far as to defining the server
profile differently based upon if it is a mail server vs. a web server,
etc.

Regards,
Paul
-- 
My Gentoo stuff: http://varnerfamily.org/pvarner/gentoo

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