branch core-updates updated (5e21405 -> d0bff5d)

[guix-commits]

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

    from 5e21405  Merge branch 'staging'
     new c94a286  build-system/python: Do not embed timestamps in the .pyc byte 
code files.
     new 4d739cc  gnu: python-atomicwrites: Update to 1.4.0.
     new 7313a8a  gnu: icecat: Refer to the correct node variable.
     new d0bff5d  gnu: icedove: Refer to the correct node variable.

The 4 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:
 gnu/packages/gnuzilla.scm          |  4 ++--
 gnu/packages/python-xyz.scm        |  5 +++--
 guix/build/python-build-system.scm | 29 ++++++++++++++++++++---------
 3 files changed, 25 insertions(+), 13 deletions(-)