python-debian: switch ar implementation to python-arpy

[Helmut Grohne <helmut@subdivi.de>]

Package: python-debian
Version: 0.1.21+nmu2
Severity: wishlist
Control: block -1 by 704594

On Thu, Aug 01, 2013 at 04:19:42PM +0200, Stefano Zacchiroli wrote:
> Can you please file a bug report about that (ideally marking the pending
> ITPs as blockers for it)? Regarding changing interfaces it would be
> better not to do that, of course, but even more so because it's not
> clear to me how many users of the debfile module are out there in the
> wild. We can do a call for it or something, but let's move the
> discussion to an appropriate bug report first.

Sure. Here is your bug. So let me give a summary of advantages of the
move:
 * Less code.
 * Works with non-seekable fileobjs.
 * #642020 is fixed for free (but there also is a patch).
 * #689313 would be obsoleted (but there also is a patch).
 * python-arpy has a responsive upstream and maintainer.

Helmut