branch master updated (7988af9 -> 153b629)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  7988af9   gnu: Removed unused module import from (gnu packages 
gimp).
       new  4d8e950   challenge: Return comparison reports instead of just 
discrepancies.
       new  153b629   challenge: Add '--verbose'.

The 2 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 doc/guix.texi              |    5 ++
 guix/scripts/challenge.scm |  185 ++++++++++++++++++++++++++++----------------
 tests/challenge.scm        |   62 ++++++++++++---
 3 files changed, 177 insertions(+), 75 deletions(-)