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Date: Tue, 21 Jul 2020 10:40:31 -0400
From: Michael Orlitzky <mjo@gentoo.org>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: dns/bind-tools 9.14 -> 9.16 pulling in 17 new
 dependencies?!
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On 2020-07-21 13:08:16, Grant Edwards wrote:
> On 2020-07-20, Michael Orlitzky <mjo@gentoo.org> wrote:
> 
> > These are build-only dependencies so "emerge --depclean" can remove them
> > after you install bind-tools.
> 
> Except it doesn't.  I did an "emerge --depclean" after updating
> bind-tools, and sphinx et al were not removed.
> 

The logic (and documentation) is incomprehensible to me, but this
behavior depends on --with-bdeps and some related arguments to emerge.