Patatt (https://git.kernel.org/pub/scm/utils/patatt/patatt.git) is now
in Debian unstable and patch attestation functionality has been moved
to it, so requesting that a dependency be included in b4 for patatt.

Right now, without patatt installed, b4 gives:

$ b4 attest /tmp/patch
ERROR: b4 now uses patatt for patch attestation. See:
https://git.kernel.org/pub/scm/utils/patatt/patatt.git/about/

But with patatt installed:

$ b4 attest /tmp/patch
SIGN | patch
$ patatt validate /tmp/patch
  PASS | anuradha@debian.org, [PATCH] Updated the man page

Hello,

This is now done, however, the recommended patatt version is patatt>=0.5,<2.0.
I'll update the package to versioned dependency once this is updated
in unstable.

Regards,

We believe that the bug you reported is fixed in the latest version of
b4, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1000250@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Héctor Orón Martínez <zumbi@debian.org> (supplier of updated b4 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Thu, 23 Jun 2022 00:04:50 +0200
Source: b4
Architecture: source
Version: 0.9.0-1
Distribution: unstable
Urgency: medium
Maintainer: Héctor Orón Martínez <zumbi@debian.org>
Changed-By: Héctor Orón Martínez <zumbi@debian.org>
Closes: 1000250
Changes:
 b4 (0.9.0-1) unstable; urgency=medium
 .
   * New upstream release
   * debian/control: depend on pattat (Closes: #1000250)
   * debian/control: remove ancient python version field
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