On Sat, 2014-06-14 at 16:13 +0100, Ciaran McCreesh wrote:
> On Sat, 14 Jun 2014 16:41:51 +0200
> Michał Górny <mgorny@gentoo.org> wrote:
> > However, this means that we force much more rebuilds than necessary.
> 
> This shouldn't be considered to be a problem.

This would be suicide for Gentoo as a distro. Organizations that have a
dedicated build server and a standardized /etc/portage config tree
pushed to all user machines could rebuild half of @world once a week.
Individual users running Gentoo on a single workstation or server can't
and won't.