Re: [gentoo-dev] [RFC] mask and force various profile specific USE flags

[Zac Medico]

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Ciaran McCreesh wrote:
> On Sat, 17 Feb 2007 15:22:34 -0800 Zac Medico <zmedico@g.o>
> wrote:
> | In order to do this, selected profile specific flags should be
> | masked in the base profile and unmasked/forced in the specific
> | profiles which they apply to.  The unmasking is necessary because
> | use.mask currently overrides use.force.  USE flags suggested as
> | candidates for masking/forcing include all USE_EXPAND flags derived
> | from the USERLAND, KERNEL, and ELIBC variables.
>
> ...and ARCH, since it seems not all profiles mask all archs...
>

Given the current single-inheritance profile structure and the way
that many leaf profiles define an ARCH that is different from their
parent profile, it will require ARCH masking/forcing in
approximately 80 different individual profiles.  I'm not sure if
it's really worth it.   When we start using multiple-inheritance, we
can define ARCH specific profiles that those 80 different individual
profiles can inherit their ARCH masking/forcing from.

Another alternative is to have the package manager do ARCH
masking/forcing automatically where appropriate.  I'm not sure if
it's a good idea to hardcode something like that though.  If we want
to implement this, one problem with the current profiles is that
default-darwin/macos uses ARCH="ppc" and
ACCEPT_KEYWORDS="ppc-macos", where both ppc and ppc-macos are
currently listed in arch.list.  However, this profile is exceptional
and it is gradually being phased out of the gentoo-x86 tree as macos
users migrate to the prefix branch of portage.

Zac
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