Re: [gentoo-dev] Preventing $ARCH flags in USE

[Zac Medico <zmedico@gentoo.org>]

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Vlastimil Babka wrote:
> Apparently, setting USE=x86 in make.conf on amd64 arch can have funny
> consequences such as [1]. And I can imagine even more subtle and hard to
> detect errors due to this.
> 
> I think it's better to prevent this rather than waste time with bug
> reports like that. I asked Zac on IRC whether portage could filter such
> flags. He suggested using use.mask in profiles. Well since ARCH is also
> set by a profile, why not. Although a really persistent and stupid user
> could use.unmask, it's better than no protection. And then we can think
> how to replace the current ARCH->USE flag system with e.g. USE_EXPAND.
> What do you think?
> 
> Vlastimil
> 
> [1] http://bugs.gentoo.org/show_bug.cgi?id=236801
> 

I suggest that we unmask the appropriate ARCH flags in
profiles/arch/*/use.mask, add ../base to profiles/arch/*/parent, and
create profiles/arch/base/use.mask to mask all of the existing ARCH
flags. This will serve to mask all but the appropriate ARCH flags
for all of the 2008.0 profiles. Does this seem reasonable?
- --
Thanks,
Zac
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