branch core-updates updated (9b4c3c6 -> 12c2648)

[guix-commits]

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

    from 9b4c3c6  news: Add news entry for simplified package inputs.
     new 6f12880  gnu: fontconfig: Use (locally) deterministic caching
     new a6f3800  gnu: fontconfig: Don't build PDFs.
     new bc7dd3f  doc: cookbook: Remove trailing #t from extended example.
     new 12c2648  doc: cookbook: Adjust example to simplified input style.

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:
 doc/guix-cookbook.texi                             | 52 ++++++++++------------
 gnu/local.mk                                       |  1 +
 gnu/packages/fontutils.scm                         | 15 ++++++-
 .../patches/fontconfig-cache-ignore-mtime.patch    | 15 +++++++
 4 files changed, 53 insertions(+), 30 deletions(-)
 create mode 100644 gnu/packages/patches/fontconfig-cache-ignore-mtime.patch