branch core-updates updated (386457b -> 352e6c8)

[guix-commits]

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

    from 386457b  gnu: zstd: Update to 1.4.5.
     new 849f6e0  build-system/python: Install to the python output if present.
     new 352e6c8  gnu: unicorn: Use python-build-system with grace.

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:
 doc/guix.texi                      |  7 +++++++
 gnu/packages/emulators.scm         | 19 ++++---------------
 guix/build/python-build-system.scm | 24 +++++++++++-------------
 3 files changed, 22 insertions(+), 28 deletions(-)