Bug#883950: Bug#904729: Policy 12.5: Must the license grant be included in debian/copyright?

[Simon McVittie <smcv@debian.org>]

On Fri, 27 Jul 2018 at 17:18:42 +0800, Sean Whitton wrote:
> If we want to implement anything like what's being discussed
> in #883950, we need section 12.5 to state explicitly that the license
> grant need not be included.

<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=883950#80> suggests
that the license grant is no longer required, which appears to be a
change in ftp team requirements since the previous official statement
<https://lists.debian.org/debian-devel-announce/2006/03/msg00023.html>,
which said: "Its not enough to have the following two-liner ["On Debian
systems", etc.]. There are license headers [license grants], you should
use those".

ftp team: has the requirement to reproduce license grants for (some?)
licenses in d/copyright changed since 2006, or am I misunderstanding
the statement in #883950?

To make things easier, here are some possible policies that the ftp team
might reasonably choose:

* For common-licenses, d/copyright must include

  ( ) at least one of: a well-known license identifier like "GPL-2+"
      or a reference to common-licenses ("On Debian systems", etc.)
  ( ) a reference to common-licenses, and also at least one of:
      a well-known license identifier like "GPL-2+", or a license grant
  ( ) both a license grant and a reference to common-licenses
  ( ) something else (please specify)

* For licenses not available in common-licenses, d/copyright must include

  ( ) the full text of the license
  ( ) the full text of the license, *and* the license grant
      (unless the license *is* the license grant, like BSD-style licenses)
  ( ) something else (please specify)

Thanks,
    smcv