branch master updated (a9a8f06 -> 4d58122)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  a9a8f06   Revert "gnu: Add sdcv."
       new  2924f0d   gexp: Add identity compiler for derivations.
       new  accb682   gexp: Allow <gexp-input> objects in #:allowed-references.
       new  607e1b5   gexp: Ignore nested gexps in macro expansion.
       new  1123759   gexp: Fix handling of nativeness in nested gexps.
       new  4d58122   store: Default to a non-empty list of substituters.

The 5 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:
 guix/gexp.scm  |   66 +++++++++++++++++++++++++++++++++++++++++--------------
 guix/store.scm |   11 ++++++++-
 tests/gexp.scm |   23 +++++++++++++++++++
 3 files changed, 82 insertions(+), 18 deletions(-)