Apparently, though unproven, at 15:33 on Monday 07 February 2011, Neil 
Bothwick did opine thusly:

> > An `emerge -e world` may break things, but it's not usually that likely
> > to. 
> 
> An emerge -e world is not likely to break things in itself, but the steps
> that require it, such as changing CHOST, are. The extra steps of a
> reinstall over trying to fix a machine with a borked
> binutils/glibc/whatever can be far more time consuming, not to mention
> frustrating, than a reinstall, and may only be fixed by a reinstall
> anyway after all that.
> 
> I'm not an advocate of reinstalling normally, this installation is three
> years older than the computer running it, but when performing drastic
> low-level surgery, I believe it should be contemplated.


If you're a gambling man, play it by the numbers:

A re-install for a Gentoo user with a clue is a certain 1 hour of your life 
tops to get it redone with a recent stage 3, more likely 30 minutes. That will 
give you a working system albeit one a bit out of date that emerge -avunD 
world will fix nicely.

Trying to fix the existing system complete with it's borkage is very 
uncertain. Maybe it's 5 minutes, maybe it's 2 hours, maybe it's three days on 
this list scratching heads before eventually giving up and re-installing 
anyway.

Personally, I long ago proved I can do #2. I like the certainty from #1.


-- 
alan dot mckinnon at gmail dot com

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