branch staging updated (1bb9969 -> 67ff2bd)

[guix-commits]

rhelling pushed a change to branch staging
in repository guix.

      from  1bb9969   gnu: tzdata: Update to 2018i.
       new  67ff2bd   gnu: vulkan-headers: Update to 1.1.97.

The 1 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/vulkan.scm | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)