On Wed, 31 Mar 2010 12:46:26 -0700
Brian Harring <ferringb@gmail.com> wrote:
> Actual name I don't hugely care about, I'm more interested in
> ensuring we don't rule out doing use cycle breaking via a bad design
> decision.

Cycle breaking requires explicit instructions from the ebuilds in
question (many of which are system things, which further complicates it)
along with support from Portage, so it's a distant future, lot of work
thing.

Since we need pkg_pretend to cover all the things that aren't use flag
related anyway, it makes sense to just go with that rather than
delaying things even further. When in the distant future Portage
becomes able to deal with cycle breaking, ebuilds can be converted to
use something like VALID_USE when they're also updated to export
information on which of their flags can safely be toggled.

-- 
Ciaran McCreesh