* gnu/services/base.scm (kvm-udev-rule): Change /dev/kvm mode to 0660 as a
  followup to the resolution of <http://bugs.gnu.org/18994>.

* doc/guix.texi (Binary Installation): Reinstate bit about creating group and
  user accounts, which was inadvertently removed in 01dbc7e0.

* gnu/packages/patches/icecat-enable-acceleration-and-webgl.patch: New file.
* gnu/packages/patches/icecat-CVE-2015-2722-pt1.patch,
  gnu/packages/patches/icecat-CVE-2015-2722-pt2.patch,
  gnu/packages/patches/icecat-CVE-2015-2724-pt1.patch,
  gnu/packages/patches/icecat-CVE-2015-2724-pt2.patch,
  gnu/packages/patches/icecat-CVE-2015-2724-pt3.patch,
  gnu/packages/patches/icecat-CVE-2015-2724-pt4.patch,
  gnu/packages/patches/icecat-CVE-2015-2728-pt1.patch,
  gnu/packages/patches/icecat-CVE-2015-2728-pt2.patch,
  gnu/packages/patches/icecat-CVE-2015-2733-pt1.patch,
  gnu/packages/patches/icecat-CVE-2015-2733-pt2.patch,
  gnu/packages/patches/icecat-CVE-2015-2735.patch,
  gnu/packages/patches/icecat-CVE-2015-2736.patch,
  gnu/packages/patches/icecat-CVE-2015-2738.patch,
  gnu/packages/patches/icecat-CVE-2015-2739.patch,
  gnu/packages/patches/icecat-CVE-2015-2740.patch,
  gnu/packages/patches/icecat-CVE-2015-2743.patch: Remove files.
* gnu-system.am (dist_patch_DATA): Remove them, and add the new file.
* gnu/packages/gnuzilla.scm (icecat): Update to 31.8.0-gnu1.  Remove the
  outdated patches and add the new one.

* gnu/packages/admin.scm (libpcap)[arguments]: Add "--with-pcap=linux"
  configure flag.

* gnu/packages/music.scm (setbfree)[arguments]: Override default OPTIMIZATIONS
  variable on non-x86 systems.

* gnu/packages/algebra.scm (eigen)[arguments]: 'current-processor-count' ->
  'parallel-job-count'.

* gnu/packages/ccache.scm (ccache): Update to 3.2.2.
  [arguments]: Rename 'patch-test-shebangs phase to 'setup-tests.  Set the
  SHELL environment variable.

* emacs/guix-info.el (guix-package-info-fill-heading): New variable.
  (guix-package-info-insert-heading): Fill heading if needed.

Co-authored-by: Alex Kost <alezost@gmail.com>

* gnu/packages/dunst.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

* gnu/packages/freedesktop.scm (libxdg-basedir): New variable.

Fixes <http://bugs.gnu.org/19778>.
Reported by Mark H Weaver <mhw@netris.org>.

* gnu/system/file-systems.scm (%uuid-rx): New variable.
  (string->uuid): New procedure.
  (uuid): New macro.
* tests/file-systems.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* doc/guix.texi (File Systems): Give an example of UUID.

* gnu/build/file-systems.scm (read-ext2-superblock*, partition-predicate): New
  procedures.
  (partition-label-predicate): Rewrite in terms of 'partition-predicate'.
  (partition-uuid-predicate, find-partition-by-uuid, uuid->string): New
  procedures.
  (%network-byte-order): New macro.
  (canonicalize-device-spec)[canonical-title]: Check whether SPEC is a string.
  [resolve]: New procedure.
  Add 'uuid' case and use it.

* gnu/packages/gnuzilla.scm (nss): Upgrade to 3.19.2.

* gnu/build/file-systems.scm: Wrap 'module-use!' statement in 'eval-when'.

* gnu/packages/rc.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

* gnu/packages/linux.scm (linux-libre): Update to 4.1.2.

* gnu/packages/patches/boost-mips-avoid-m32.patch: New file.
* gnu-system.am (dist_patch_DATA): Register patch.
* gnu/packages/boost.scm (boost): Use it.

* gnu/packages/boost.scm (boost): Update to 1.58.0.

* guix/scripts/substitute.scm (display-narinfo-data,
  process-query, process-substitution): New procedures.  Code moved from...
  (guix-substitute): ... here.  Use them.

* guix/scripts/build.scm (%standard-build-options,
  show-build-options-help): Add --substitute-urls=URLS.
  (set-build-options-from-command-line): Honor it.
* guix/store.scm (%default-substitute-urls): Make public.
* doc/guix.texi (Substitutes): Add xref to the client --substitute-urls
  option.
  (Invoking guix build): Document it.
  (Invoking guix-daemon): Add 'daemon-substitute-urls' anchor.

* guix/scripts/substitute.scm (or*): New macro.
  (%cache-url): Honor "untrusted-substitute-urls".
* guix/tests.scm (%test-substitute-urls): New variable.
  (open-connection-for-tests): Use it.
* tests/derivations.scm ("derivation-prerequisites-to-build and substitutes",
  "derivation-prerequisites-to-build and substitutes, non-substitutable
  build", "derivation-prerequisites-to-build and substitutes, local build"):
  Pass it to 'set-build-options'.
* tests/guix-daemon.sh: Likewise.
* tests/store.scm ("substitute query, alternating URLs"): New test.
  ("substitute query", "substitute", "substitute + build-things with output
  path", "substitute, corrupt output hash", "substitute --fallback"): Pass
  #:substitute-urls to 'set-build-options'.

This ensures that switching between different substitute servers doesn't lead
to a polluted narinfo cache.

* guix/scripts/substitute.scm (narinfo-cache-file): Add 'cache-url'
  parameter.  Add the base32 of CACHE-URL as a sub-directory under
  %NARINFO-CACHE-DIRECTORY.  Update callers.
  (cached-narinfo): Likewise.  Call 'mkdir-p' on the dirname of the cache
  file.  Update callers.
  (remove-expired-cached-narinfos): Add 'directory' parameter and use it
  instead of %NARINFO-CACHE-DIRECTORY.
  (narinfo-cache-directories): New procedure.
  (maybe-remove-expired-cached-narinfo): Call 'remove-expired-cached-narinfos'
  for each item returned by 'narinfo-cache-directories'.

* guix/scripts/substitute.scm (<cache>): Rename to...
  (<cache-info>): ... this.
  (open-cache): Rename to...
  (download-cache-info): ... this.  Return a <cache-info> or #f.
  (open-cache*): Remove.
  (cache-narinfo!): Take a URL instead of a <cache> as the first parameter.
  (fetch-narinfos): Likewise.  Call 'download-cache-info'.  Remove use of
  'force'.
  (guix-substitute): Replace calls to 'open-cache*' with %CACHE-URL.

* guix/scripts/substitute.scm (guix-substitute): Remove unneeded (if cache
  ...) forms since CACHE is always true (it's a promise.)

* gnu/system/file-systems.scm (%container-file-systems): Fix typo in a
  comment.

* guix/scripts/lint.scm (guix): Remove duplicated lines for using
  'srfi-34' and 'srfi-35' modules.  These lines were introduced twice by
  commits b210b35d and 002c57c6.

* gnu/packages/gnome.scm (rhythmbox): New variable.

* gnu/packages/gcc.scm (make-libstdc++-doc): New procedure.
  (libstdc++-doc-4.9, libstdc++-doc-5.1): New variables.

* gnu/package/skarnet.scm (execline): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/package/skarnet.scm (skalibs): New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/pumpio.scm (pumpa): Update to 0.9.1.  Change URL.

Signed-off-by: Mathieu Lirzin <mthl@openmailbox.org>

* gnu/packages/polkit.scm (polkit): Update to 0.113.

* gnu/packages/ssh.scm (openssh): Update to 6.9p1.
  [source]: Use http mirrors.  Add mirror from Erlangen.

This is a followup to commit d43002f6.

* gnu/system/install.scm (installation-os)[packages]: Refer to IPROUTE instead
  of IPROUTE2.

* gnu/packages/tls.scm (openssl): Update to 1.0.2d.

* gnu/packages/ntp.scm (ntp): Update to 4.2.8p3.
  [source]: Add snippet to remove bundled copy of libevent.
  [inputs]: Add libevent.
  [arguments]: Add 'disable-network-test' phase.

Co-authored-by: Federico Beffa <beffa@fbengineering.ch&gt;.>

* emacs/guix-emacs.el (guix-emacs-find-autoloads-in-directory,
  guix-emacs-subdirs): New functions.
  (guix-emacs-find-autoloads): Search for autoloads in "guix.d"
  subdirectories.
  (guix-emacs-load-autoloads): Add subdirectories to 'load-path'.
* emacs/guix-init.el.in: Do not add guix emacs directory to 'load-path'
  because it will be done by 'guix-emacs-load-autoloads'.  Move
  requiring 'guix-emacs' from the top-level to a clause for checking for
  'guix-package-enable-at-startup'.

Fixes <http://bugs.gnu.org/21019>.
Reported by <info@danieleparisi.me>.

* gnu/system/install.scm (installation-os)[packages]: Add IPROUTE2.

* gnu/packages/gnome.scm (gnome-terminal): Move dconf from inputs to
  propagated-inputs.

* tests/syscalls.scm ("clone", "setns", "pivot-root"): Skip
  unless (user-namespace (getpid)) exists.