[bug#48702] [PATCH 0/3] Add patatt and update b4

[Kyle Meyer]

This series updates b4 to the latest version.  b4 now uses a separate tool for
patch attestation (added in patch 2), which in turn uses a license that's not
in guix/licenses.scm (added in patch 1).

  [1/3] licenses: Add Expat No Attribution license.
  [2/3] gnu: Add patatt.
  [3/3] gnu: b4: Update to 0.7.0.

 gnu/packages/version-control.scm | 37 +++++++++++++++++++++++---------
 guix/import/utils.scm            |  2 ++
 guix/licenses.scm                | 10 ++++++++-
 3 files changed, 38 insertions(+), 11 deletions(-)


base-commit: 014421ee271f1790d81c9660d34ac26c4f2bf8b6
-- 
2.32.0.rc1.229.g3e70b5a671