Gentoo Archives: gentoo-dev

From: Ciaran McCreesh <ciaran.mccreesh@××××××××××.com>
To: "Michał Górny" <mgorny@g.o>
Cc: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] [PATCH eutils] Introduce has_iuse() for IUSE checks.
Date: Tue, 13 Sep 2011 10:51:46
Message-Id: 20110913114633.51f7fdc0@googlemail.com
In Reply to: Re: [gentoo-dev] [PATCH eutils] Introduce has_iuse() for IUSE checks. by "Michał Górny"
1 On Tue, 13 Sep 2011 12:50:30 +0200
2 Michał Górny <mgorny@g.o> wrote:
3 > > Are you sure this is defined behaviour? IUSE is a fancy merged
4 > > variable for eclasses, and I don't think we guarantee that the value
5 > > visible to the ebuild at any particular point is the generated value
6 > > used by the package mangler.
7 >
8 > True. I guess there's no way to tell whether a particular IUSE is
9 > defined in the ebuild then? Hrm, I guess we'll need to break API
10 > compat (and a number of ebuilds then) to get rid of this.
11
12 You don't do it by checking IUSE. You do it by having the ebuild define
13 a variable like WANT_MONKEY_SUPPORT.
14
15 --
16 Ciaran McCreesh

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