* doc/guix.texi: Replace outdated @author list with just "The GNU Guix
  Developers".

* gnu/packages/statistics.scm (r-lazyeval): New variable.

* gnu/packages/statistics.scm (r-assertthat): New variable.

* gnu/packages/ruby.scm (ruby-gherkin3): New variable.

* guix/script/lint.scm (check-description-style): Check for invalid
  Texinfo markup.
* tests/lint.scm: Test it.

* emacs/guix-command.el (guix-run-view-build-log): New function.
  (guix-command-additional-execute-arguments,
  guix-command-special-executors): Add entries for "View build log"
  action.
* emacs/guix-utils.el (guix-find-file-or-url): New function.

* emacs/guix-build-log.el: New file.
* emacs.am (ELFILES): Add it.
* doc/emacs.texi (Emacs Build Log): Document it.  New node.
  (Emacs Interface): Add it.
* doc/guix.texi (Top): Likewise.

* emacs/guix-main.scm (output+error): New procedure.
  (guix-command-output): Use it.
* emacs/guix-base.el (guix-command-output): Display error output in the
  minibuffer.

* emacs/guix.el (guix-faces): New custom group.
* emacs/guix-base.el (guix-operation-option-key): Use it.
  (guix-define-buffer-type): Generate faces group.
* emacs/guix-info.el: Adjust faces to use new groups.
  (guix-info-faces): New custom group.
* emacs/guix-list.el: Likewise
  (guix-list-faces): New custom group.

* guix/scripts/lint.scm (check-source-file-name): New procedure.
  (%checkers): Add 'source-file-name' checker.
* tests/lint.scm ("source-file-name", "source-file-name: v prefix")
  ("source-file-name: valid", "source-file-name: bad checkout")
  ("source-file-name: good checkout"): New tests.
* doc/guix.texi (Invoking guix lint): Mention file name check.

* guix/scripts/graph.scm (uri->file-name, node-full-name): Move origin file
  name logic to...
* guix/packages.scm (origin-actual-file-name): ...here.
* tests/packages.scm ("origin-actual-file-name")
  ("origin-actual-file-name, file-name"): New tests.

* guix/build/download.scm (nearest-exact-integer): New procedure.
  (seconds->string, byte-count->string): Use it.

Fixes <http://bugs.gnu.org/21451>.
Reported by Steve Sprang <steve.sprang@gmail.com>.

* guix/scripts/system.scm (guix-system)[option-arguments]: Error out
  when ACTION is #f.

Apply the recommended formatting rules from '.dir-locals.el' to the
examples in the manual in order to fulfill it's purpose of being a
reference.

* doc/package-hello.scm: Indent it.
* doc/guix.texi (Defining Packages, Version Numbers): Likewise.
* gnu/packages/base.scm (hello): Be consistent with the manual.

* gnu/packages/bioinformatics.scm (bio-locus): New variable.

This reverts commit b429c4fb.

* gnu/packages/bioinformatics.scm (bio-locus): New variable.

* gnu/system/linux-container.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* gnu/system.scm: Export 'operating-system-etc-directory',
  'operating-system-boot-script', 'operating-system-locale-directory', and
  'file-union'.
  (operating-system-boot-script): Add #:container? keyword argument.
  (operating-system-activation-script): Add #:container?  keyword argument.
  Don't call 'activate-firmware' or 'activate-ptrace-attach' when activating a
  container.

Previously, the Ruby build system only knew how to work with gem archives,
which made it difficult to build unreleased gems from a Git repository or
released gems in tarball form.

* gnu/build/ruby-build-system.scm (gnu:unpack, gem-archive?): New procedures.
  (unpack): Use GNU build system unpack phase for non-gem sources.
  (build): Rebuild the gemspec iff the source is a gem archive.
* guix.texi ("ruby-build-system"): Mention that tarballs and directories are
  acceptable.

* gnu/packages/openstack.scm (python-oslo.utils, python2-oslo.utils): New variables.

* gnu/packages/openstack.scm (python-debtcollector,
  python2-debtcollector): New variables.

* gnu/packages/python.scm (python-monotonic, python2-monotonic): New variables.

* gnu/packages/python.scm (python-iso8601, python2-iso8601): New variables.

* gnu/packages/python.scm (python-wrapt, python2-wrapt): New variables.

* gnu/packages/openstack.scm (python-oslo.config, python2-oslo.config): New variables.

* gnu/packages/openstack.scm (python-stevedore, python2-stevedore): New variables.

* gnu/packages/python.scm (python-netaddr, python2-netaddr): New variables.

* gnu/packages/version-control.scm (cvs-fast-export): New variable.

* gnu/packages/gnupg.scm (gnupg): Update to 2.1.8.

* gnu/packages/cpio.scm (cpio): Update to 2.12.
  [source]: Remove 'patches' field.
* gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch,
  gnu/packages/patches/cpio-CVE-2014-9112-pt2.patch,
  gnu/packages/patches/cpio-CVE-2014-9112-pt3.patch,
  gnu/packages/patches/cpio-CVE-2014-9112-pt4.patch,
  gnu/packages/patches/cpio-CVE-2014-9112-pt5.patch,
  gnu/packages/patches/cpio-fix-symlink-bad-length-test.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove.

* gnu/packages/game-development.scm (tiled): Update to 0.13.1.

* gnu/packages/databases.scm (redis): Update to 3.0.4.

This reverts commit daa48c31.

* gnu/packages/compression.scm (lz4): New variable.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

* gnu/services/base.scm (mingetty-service): Change default value of
  #:motd from a monadic value to a <plain-file>.  Assume MOTD to be a
  file-like object.  Assume LOGIN-PROGRAM is a gexp or #f.
  (%base-services): Use 'plain-file' instead of 'text-file' for motd.
* gnu/system/linux.scm (unix-pam-service): Update docstring to mention
  that MOTD is a file-like object.
* doc/guix.texi (Base Services): Adjust 'mingetty-service' documentation
  accordingly.

* gnu/packages/ibus.scm (ibus-libpinyin): New variable.

* gnu/packages/ibus.scm (libpinyin): New variable.

* gnu/packages/games.scm (minetest-data, minetest): Update to 0.4.13.

This reverts commit 5cfb91c7.

* gnu/packages/compression.scm (lzo): Update to 2.09.