Partly fixes <http://bugs.gnu.org/20255>.

* guix/scripts/package.scm (search-path-environment-variables): Change
  'profile' to 'profiles'; expect it to be a list.
  (display-search-paths): Likewise.
  (%default-options): Remove 'profile' entry.
  (%options) <--profile>: Keep previous values associated with 'profile'
  in RESULT.
  (guix-package)[process-actions, process-query]: Handle the possible
  lack of 'profile' pair in OPTS.

* gnu/system.scm (user-shells): Remove.
  (operating-system-etc-service): Remove "shells" entry.
  (shells-file): Move to...
* gnu/system/shadow.scm (shells-file): ... here.  New procedure.
  (etc-skel): Rename to...
  (etc-files): ... this.  Add "shells" entry.
  (account-service-type): Adjust accordingly.

* gnu/packages/tor.scm (torsocks): Update to 2.0.0.
  [source]: Fetch from git.torproject.org.  Use
  'torsocks-dns-test.patch'.
  [arguments, native-inputs]: New fields.
  [license]: Change to GPL2.
* gnu/packages/patches/torsocks-dns-test.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/gtk.scm (gtksourceview-2): Move libxml2 to propagated
  inputs.

* gnu/packages/games.scm (mupen64plus-ui-console): New variable.
* gnu/packages/patches/mupen64plus-ui-console-notice.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/games.scm (mupen64plus-video-z64): New variable.

* gnu/packages/games.scm (mupen64plus-video-rice): New variable.

* gnu/packages/games.scm (mupen64plus-video-glide64mk2): New variable.

* gnu/packages/games.scm (mupen64plus-video-glide64): New variable.

* gnu/packages/games.scm (mupen64plus-video-arachnoid): New variable.

* gnu/packages/games.scm (mupen64plus-rsp-z64): New variable.

* gnu/packages/games.scm (mupen64plus-rsp-hle): New variable.

* gnu/packages/games.scm (mupen64plus-input-sdl): New variable.

* gnu/packages/games.scm (mupen64plus-audio-sdl): New variable.

* gnu/packages/games.scm (mupen64plus-core): New variable.

* gnu/packages/gnome.scm (libgweather): Update to 3.18.1.  Enable tests.
  [native-inputs]: Add gobject-introspection.

* gnu/packages/glib.scm (telepathy-glib): Propagate inputs dbus, dbus-glib
  and glib.  Move gobject-introspection and libxslt to 'native-inputs'.

* gnu/packages/maths.scm (pspp)[inputs]: Use gtksourceview-2.

* gnu/packages/guile.scm (artanis): New variable.

* gnu/packages/guile.scm: Remove duplicate 'check deletion in modify-phases

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

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

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

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

Co-authored-by: 宋文武 <iyzsong@gmail.com>

* gnu/packages/gnome.scm (libpeas): Update to 1.16.0.

* gnu/packages/gtk.scm (gtksourceview): Rename to...
  (gtksourceview-2): ... this.
  (gtksourceview): Update to 3.18.1.
* gnu/packages/ocaml.scm (lablgtk)[inputs]: Replace "gtksourceview" with "gtksourceview-2".

Co-authored-by: 宋文武 <iyzsong@gmail.com>

* gnu/packages/gnome.scm (clutter): Update to 1.24.2.

* gnu/packages/gnome.scm (cogl): Update to 1.22.0.

* gnu/packages/patches/lua52-liblua-so.patch: New file.
* gnu/packages/lua.scm (lua-5.2): Use lua52-liblua-so.patch.

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

* gnu/packages/lua.scm (luajit): Remove tabs.

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

Reported by Sleep_Walker and Mathieu Lirzin <mthl@gnu.org>.

* guix/scripts/refresh.scm (maybe-updater, list-updaters): New macros.
  (%updaters): Use 'list-updaters' instead of 'list'.  Make
  %PYPI-UPDATER conditional.

* gnu/packages/maths.scm (wcalc): New variable.

* gnu/packages/maths.scm (octave): Update to 4.0.0.

* gnu/packages/maths.scm (glpk): Update to 4.57.

* gnu/packages/gnome.scm (evince): Update to 3.18.1.

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

* gnu/packages/gnuzilla.scm (mozjs-24): New variable.

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

* gnu/packages/gnome.scm (gnome-themes-standard): Update to 3.18.0.

* gnu/packages/gnome.scm (gnome-desktop): Update to 3.18.1.
  Move gsettings-desktop-schemas and gtk+ to 'propagated-inputs'.
  [native-inputs]: Add gobject-introspection.