branch master updated (b57ec5f -> ef8f910)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  b57ec5f   gnu: file-systems: Fix typo.
       new  e4e099f   substitute: Remove unneeded conditionals.
       new  074efd6   substitute: Pass the cache URL instead of <cache> objects.
       new  895d1ed   substitute: Store cached narinfo in cache-specific 
sub-directories.
       new  24f5aaa   substitute: Honor "substitute-urls" option passed by 
"untrusted" clients.
       new  f8a8e0f   guix build: Add '--substitute-urls' client option.
       new  ef8f910   substitute: Improve functional decomposition.

The 6 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               |   20 +++-
 guix/scripts/build.scm      |   12 ++
 guix/scripts/substitute.scm |  317 +++++++++++++++++++++++--------------------
 guix/store.scm              |    1 +
 guix/tests.scm              |   11 ++-
 tests/derivations.scm       |    9 +-
 tests/guix-daemon.sh        |   12 +-
 tests/store.scm             |   51 ++++++-
 8 files changed, 267 insertions(+), 166 deletions(-)