branch core-updates updated (aca00b0 -> a6bf7a9)

[guix-commits]

mothacehe pushed a change to branch core-updates
in repository guix.

    from aca00b0  gnu: CMake: Update to 3.16.5.
     new fdae0fa  store: Add set-current-target procedure.
     new a6bf7a9  gexp: Default to current target.

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


Summary of changes:
 guix/gexp.scm  | 91 ++++++++++++++++++++++++++++++++++------------------------
 guix/store.scm |  8 +++++-
 tests/gexp.scm | 50 ++++++++++++++++++++++++++++++++
 3 files changed, 110 insertions(+), 39 deletions(-)