branch master updated (7da1db5 -> f5db54e)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  7da1db5   gnu: linux-libre: Update to 4.17.8.
       new  d4c06f3   gnu: julia: Fix 'llvm' version.
       new  ec83aba   gnu: Add r-txtplot.
       new  b94b698   serialization: Add 'write-file-tree'.
       new  7f11efb   store: Add 'add-file-tree-to-store'.
       new  4d20d87   gexp: Remove unnecessary 'mlet'.
       new  8df2eca   gexp: 'imported-files' no longer creates a derivation by 
default.
       new  e529d46   gexp: 'imported-files/derivation' can copy files instead 
of symlinking.
       new  f5db54e   self: Use the new 'imported-files'.

The 8 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/julia.scm      |   2 +-
 gnu/packages/statistics.scm |  20 ++++++
 guix/gexp.scm               | 145 +++++++++++++++++++++++++++++++++++---------
 guix/packages.scm           |   3 +
 guix/self.scm               |  57 +++++++----------
 guix/serialization.scm      | 140 ++++++++++++++++++++++++++++++++----------
 guix/store.scm              | 100 ++++++++++++++++++++++++++++++
 tests/gexp.scm              |  31 +++++-----
 tests/nar.scm               |  62 ++++++++++++++++++-
 tests/store.scm             |  46 ++++++++++++++
 10 files changed, 495 insertions(+), 111 deletions(-)