branch master updated (5deea4f -> aa72d9a)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  5deea4f   gnu: nss: Update to 3.17.4.
       new  57a516d   gnu: Add acpid.
       new  aa72d9a   gexp: Implement 'imported-modules' & co. using 
'gexp->derivation'.

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:
 gnu/packages/linux.scm |   21 ++++++
 guix/derivations.scm   |   19 ++----
 guix/gexp.scm          |  158 +++++++++++++++++++++++++++++++++++++++++++++++-
 tests/derivations.scm  |   17 -----
 tests/gexp.scm         |   34 ++++++++++
 5 files changed, 216 insertions(+), 33 deletions(-)