Bug#880920: Document Rules-Requires-Root field

[Guillem Jover <guillem@debian.org>]

On Sun, 2017-11-05 at 10:20:35 -0700, Sean Whitton wrote:
> Package: debian-policy
> Version 4.1.1.1
> Severity: normal
> User: debian-policy@packages.debian.org
> Usertags: proposal
> 
> On Sat, Nov 04 2017, Niels Thykier wrote:
> > While there has not been any comments / feedback on devel-devel, we
> > have seen about 35-40 packages adopting R³ since the proposal was
> > posted to debian-devel. :)
> >   This puts us on about ~50 packages that can now build without
> > (fake)root today (per [codesearch query]).
> 
> Given this, Rules-Requires-Root should go into Policy.

Yes, now, that the feedback deadline has passed.

> I wonder if we should just make Policy the new home of the spec that
> Niels and Guillem have already written?

While I think this should be obviously documented in policy. I'm not
planning on removing the "spec" from dpkg itself, because it's been my
growing opinion that dpkg should be self-contained when it comes to the
documentation about every of the interfaces it uses and provides. More
so because dpkg is used beyond Debian, and in many places it has no
saying on policies (vs. mechanisms), and in others it allows things
that Debian policy does not.

I could perhaps consider removing the debhelper keyword mention from
there because it feels like a layer violation, but I'm not overly
bothered.

Thanks,
Guillem