gnu: Add python-pytzdata.

* gnu/packages/time.scm (python-pytzdata): New variable.

gnu: Add python-backpack.

* gnu/packages/python.scm (python-backpack): New variable.

gnu: Add hunspell-dict-fr{,moderne,reforme1990,toutesvariantes}.

* gnu/packages/libreoffice.scm (dicollecte-french-dictionary): New
procedure.
(define-french-dictionary): New macro.
(hunspell-dict-fr-classique)
(hunspell-dict-fr-moderne)
(hunspell-dict-fr-réforme-1990)
(hunspell-dict-fr-toutes-variantes): New variables.

gnu: hunspell: Specify 'DICPATH' variable.

* gnu/packages/libreoffice.scm (hunspell)[native-search-paths]: New
variable.

gnu: man-pages: Update to 4.13.

* gnu/packages/man.scm (man-pages): Update to 4.13.

build-system: Add 'meson-build-system'.

* Makefile.am (MODULES): Add 'guix/build-system/meson.scm' and
'guix/build/meson-build-system.scm'.
* guix/build-system/meson.scm: New file.
* guix/build/meson-build-system.scm: New file.
* doc/guix.texi (Build Systems): Add 'meson-build-system'.

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

services: networking: Add descriptions.

* gnu/services/networking.scm (static-networking-service-type)
(ntp-service-type, inetd-service-type, tor-service-type)
(tor-hidden-service-type, bitlbee-service-type)
(wicd-service-type, network-manager-service-type)
(connman-service-type, openvswitch-service-type): Add 'description'
field.
* po/packages/POTFILES.in: Add gnu/services/networking.scm.

services: base: Add descriptions.

* gnu/services/base.scm (fstab-service-type)
(file-system-service-type, urandom-seed-service-type)
(session-environment-service-type)
(console-font-service-type)
(login-service-type, agetty-service-type)
(mingetty-service-type, nscd-service-type)
(pam-limits-service-type, guix-service-type)
(guix-publish-service-type, udev-service-type)
(gpm-service-type): Add 'description' field.
* po/packages/POTFILES.in: Add gnu/services/base.scm.

guix system: Add 'search' command.

* guix/scripts/system.scm (resolve-subcommand): New procedure.
(process-command): Handle 'search'.
(guix-system): Likewise.
(show-help): Augment.
* guix/scripts/system/search.scm: New file.
* po/guix/POTFILES.in: Add it.
* Makefile.am (MODULES): Add it.
* guix/ui.scm (%text-width): Export.
* doc/guix.texi (Invoking guix system): Document it.
(Service Types and Services): Mention 'guix system search'.
* tests/guix-system.sh: Test it.

services: Add 'fold-service-types'.

* gnu/services.scm (%distro-root-directory, %service-type-path): New
variables.
(fold-service-types): New procedure.

services: Add a description and location for each service type.

* gnu/services.scm (<service-type>)[description, location]: New field.
* doc/guix.texi (Service Types and Services): Document 'description'.

ui: Generalize relevance computation.

* guix/ui.scm (relevance, package-relevance): New procedures.
(%package-metrics): New variable.
* guix/scripts/package.scm (find-packages-by-description)[score]
[package-score]: Remove.  Use 'package-relevance' instead.

gnu: Add meson-for-build.

* gnu/packages/build-tools.scm (meson-for-build): New variable.
* gnu/packages/patches/meson-for-build-rpath.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.

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

gnu: meson: Update to 0.42.0.

* gnu/packages/build-tools.scm (meson): Update to 0.42.0.
  [propagated-inputs]: Add python.

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

gnu: emacs-markdown-mode: Update to 2.3.

* gnu/packages/emacs.scm (emacs-markdown-mode): Update to 2.3.

Signed-off-by: Christopher Baines <mail@cbaines.net>

gnu: webkitgtk: Update to 2.18.0.

* gnu/packages/webkit.scm (webkitgtk): Update to 2.18.0.
[arguments]: Add -DUSE_GSTREAMER_GL=OFF to configure-flags.
[inputs]: Add libtasn1.

gnu: Add openfoam.

*gnu/packages/patches/openfoam-4.1-cleanup.patch: New file
*gnu/packages/simulation.scm: New file
*gnu/local.mk (GNU_SYSTEM_MODULES): Add module.
(dist_patch_DATA): Add patch.

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

gnu: emacs-emms: Fix metadata retrieval for MP3 and FLAC files.

* gnu/packages/emacs.scm (emacs-emms): Reference find, mpg321 and metaflac by
their complete file path.
[inputs]: Add flac.

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

gnu: Add python-schedule.

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

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

gnu: Add pydf.

* gnu/packages/disk.scm (pydf): New variable.

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