>>>>> On Thu, 20 Feb 2014, Alexandre Rostovtsev wrote: > I see. So you want USE="gtk gtk3" to mean the same thing that gnome > team had intended USE="gtk" to mean, which is to say, "pick > whichever gtk version that is the most sensible".
Exactly. > That could work. There are already a few ebuilds, e.g. audacious, > with REQUIRED_USE="^^ ( gtk gtk3 )" - so before this unfortunate > practice spreads further, the gnome team would need to note on the > wiki to make sure other developers know why this is especially > undesirable for the gtk/gtk3 flag pair. Devs should really follow the policy outlined in the devmanual. REQUIRED_USE was introduced to solve a specific problem with USE dependencies (which can break if a USE flag is ignored in an ebuild because it is superseded by another one). It shouldn't be used all over the place. We don't want users having to solve a Zebra Puzzle [1] (or, for the more theoretically inclined, a satisfiability problem [2]) to find an acceptable combination of their USE flags. Ulrich [1] http://en.wikipedia.org/wiki/Zebra_Puzzle [2] http://en.wikipedia.org/wiki/Boolean_satisfiability_problem
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