Re: [gentoo-user] is multi-core really worth it?

["J. Roeleveld" <joost@antarean.org>]

On Wednesday, November 22, 2017 3:34:56 PM CET Wols Lists wrote:
> On 22/11/17 14:11, Tsukasa Mcp_Reznor wrote:
> > You won't get build failures or dependency problems, portage is built to
> > handle emerging multiple packages that do not depend on each other
> > simultaneously.
> > it will not ever build a dependency and the main program at the same time.
> 
> Are you sure?
> 
> You *shouldn't* get problems, but I'm sure I have hit that problem, and
> I think it's down to buggy ebuilds.

buggy, as in, at least one dependency missed.

> Starting the emerge again fixes it, because cocked-up dependencies will
> sort themselves out first time round, and the second time the problem
> has gone away.

2nd time the dependency might have been installed already.
Sometime it hasn't.

This can also cause a failure when not using parallel builds for exactly the 
same reason.

--
Joost