Re: [gentoo-dev] RFC: making USE_EXPANDed variables incremental

[Donnie Berkholz <dberkholz@gentoo.org>]

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Stephen Bennett wrote:
> On Mon, 01 Jan 2007 13:24:49 -0800
> Donnie Berkholz <dberkholz@gentoo.org> wrote:
> 
>> That means that the base profiles must have a minimal setting that is
>> added to in lower profiles, rather than a reasonable default that's
>> entirely reset in lower profiles (perhaps to a smaller setting),
>> correct?
> 
> It would mean that all USE_EXPANDed variables get stacked in the same
> way that USE does. The base profile defines a set of defaults, which
> gets flags added to or removed from it in other profiles. At present,
> from what zmedico told me, it's handled in a weird manner which
> essentially does half the job, letting you add flags but not remove
> them in subprofiles.

I'd rather not make USE_EXPAND incremental if we can't subtract flags.
At present, we accomplish that by simply resetting the whole thing in
subprofiles. But the proposal seems to make impossible any subprofile of
a valid profile that wishes to negate a setting of the parent.

Thanks,
Donnie


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