gnu: Add r-magrittr. * gnu/packages/statistics.scm (r-magrittr): New variable.
gnu: Add r-labeling. * gnu/packages/statistics.scm (r-labeling): New variable.
gnu: Add r-gtable. * gnu/packages/statistics.scm (r-gtable): New variable.
gnu: Add r-digest. * gnu/packages/statistics.scm (r-digest): New variable.
gnu: Add r-dichromat. * gnu/packages/statistics.scm (r-dichromat): New variable.
gnu: Add r-colorspace. * gnu/packages/statistics.scm (r-colorspace): New variable.
gnu: bundler: Update to 1.10.6. * gnu/packages/ruby.scm (bundler): Update to 1.10.6.
gnu: Add libraw. * gnu/packages/photo.scm (libraw): New variable.
gnu: sfml: Update to 2.3.1. * gnu/packages/game-development.scm (sfml): Update to 2.3.1. [inputs]: Add flac, libvorbis, xcb-util-image.
gnu: linux-libre: Update to 4.2. * gnu/packages/linux.scm (linux-libre): Update to 4.2. * gnu/packages/linux-libre-x86_64.conf, gnu/packages/linux-libre-i686.conf: Update, based largely on https://jxself.org/git/kernel-configs.git
graph: Add '--expression'. * guix/scripts/graph.scm (%options, show-help): Add '--expression'. (guix-graph): Call 'read/eval-package-expression' for 'expression' pairs in OPTS. * tests/guix-graph.sh: Add tests. * doc/guix.texi (Invoking guix graph): Document it.
doc: Document polkit and elogind services. * doc/guix.texi (Desktop Services): Add polkit-service and elogind-service documentation.
gnu: Add polkit service. * gnu/services/desktop.scm (polkit-service): New function. (%desktop-services): Add polkit service.
gnu: polkit: Look for rules in /run/current-system/profile. * gnu/packages/polkit.scm (polkit): Configure to look for actions and rules in the system profile. Arrange to look for the setuid helper in /run/setuid-programs. Fix introspection installation. Based on a patch by Mark H Weaver <mhw@netris.org>.
gnu: polkit: Use elogind for seat management. * gnu/packages/polkit.scm (polkit): Depend on elogind.
gnu: Add elogind service. * gnu/services/desktop.scm (<elogind-configuration>): New record type. (elogind-configuration-file, elogind-service): New functions. (%desktop-services): Add elogind-service.
gnu: elogind: Update to version 219.12. * gnu/packages/freedesktop.scm (elogind): Update to 219.12. Use a tarball instead of a git checkout.
gnu: Add attic. * gnu/packages/backup.scm (attic): New variable. Signed-off-by: Alex Kost <alezost@gmail.com>
gnu: Add python-msgpack. * gnu/packages/python.scm (python-msgpack, python2-msgpack): New variables. Signed-off-by: Alex Kost <alezost@gmail.com>
gnu: Add python-llfuse. * gnu/packages/python.scm (python-llfuse, python2-llfuse): New variables. Signed-off-by: Alex Kost <alezost@gmail.com>