* gnu/packages/gtk.scm (python-pycairo, python2-py2cairo): New variables.

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

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

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

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

* gnu/packages/patches/python-sqlite-3.8.4-test-fix.patch,
  gnu/packages/patches/python2-sqlite-3.8.4-test-fix.patch: New patches.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/python.scm (python-2)[source]: Add patch.
  [inputs]: Add sqlite.
  (python)[source]: Add patch.

* gnu/packages/version-control.scm (subversion)[arguments]: New
  'patch-libtool-wrapper-ls phase.

* gnu/packages/xdisorg.scm (xclip): New variable.

* gnu/packages/xorg.scm (xeyes, pixman, libdrm, libdrm-2.4.33, mtdev):
  Move to ...
* gnu/packages/xdisorg.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

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

Fixes <http://bugs.gnu.org/19128>.

* gnu/packages/bittorrent.scm (transmission)[build-system]: Change to
  GLIB-OR-GTK-BUILD-SYSTEM.
  [arguments]: Add #:glib-or-gtk-wrap-excluded-outputs argument.

* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Add
  #:glib-or-gtk-wrap-excluded-outputs parameter and honor it.
* guix/build-system/glib-or-gtk.scm (glib-or-gtk-build): Add
  #:glib-or-gtk-wrap-excluded-outputs parameter and pass it in BUILDER.
* doc/guix.texi (Build Systems): Mention it.

* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Move body
  to 'handle-output' inner procedure, and parametrize it by output name
  and directory.  Call it for each element of OUTPUTS.
  (compile-glib-schemas): Likewise.

* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Use
  'for-each' instead of 'map' in for-effect contexts.  Use 'cut' instead
  of 'lambda' when appropriate.

* guix/build/glib-or-gtk-build-system.scm: M-x whitespace-cleanup.

* gnu/packages/gnupg.scm (libgpg-error): Update to 1.17.

* gnu/packages/gnutls.scm (libtasn1): Update to 4.2.

* gnu/packages/parallel.scm (parallel): Update to 20141122.

* gnu/packages/ocrad.scm (ocrad): Update to 0.24.

* gnu/packages/gnunet.scm (libmicrohttpd): Update to 0.9.38.

* gnu/packages/freeipmi.scm (freeipmi): Update to 1.4.6.

* gnu/packages/man.scm (help2man): Update to 1.46.4.

* gnu/packages/global.scm (global): Update to 6.3.3.

* gnu/packages/telephony.scm (ucommon): Update to 6.2.3.

* gnu/packages/cdrom.scm (cd-discid): Fix download location.

* gnu/packages/version-control.scm (git-test-sequence): New variable.

* gnu/packages/version-control.scm (git-flow, shflags): New variables.

* gnu/packages/admin.scm (wpa-supplicant): Remove dependency on DBUS.

* doc/guix.texi (Invoking guix build): Mention 'GUIX_BUILD_OPTIONS'.
* guix/scripts/archive.scm: (append args (environment-build-options)).
* guix/scripts/build.scm: Ditto.
* guix/scripts/environment.scm: Ditto.
* guix/scripts/package.scm: Ditto.
* guix/scripts/system.scm: Ditto.
* guix/ui.scm (environment-build-options): New function.
* guix/utils.scm (arguments-from-environment-variable): New function.
* tests/guix-build.sh: Add tests.
* test-env.in: Unset GUIX_BUILD_OPTIONS.

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

Suggested by Deck Pickard <deck.r.pickard@gmail.com>.

* nix/nix-daemon/guix-daemon.cc (main): Set 'settings.buildCores' to 0.
* doc/guix.texi (Invoking guix-daemon): Adjust accordingly.

* doc/guix.texi (File Systems): Clarify what to do when mapped devices
  are used.

This reverts commit 3b09332a, which
turned out to be a bad idea because we need to have dependency
information between the device-mapping service and the file-system
service that uses it.

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

* gnu/services/xorg.scm (xorg-start-command)[xserver.conf]: Add
  ModulePath for 'xf86-video-sis'.

Reported by Andreas Enge <andreas@enge.fr>.

* guix/gnu-maintenance.scm (sans-extension): Add case for ".zip".
  (%tarball-rx): Extend to handle .zip extension.

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

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

* gnu/packages/linux.scm (wireless-tools)[origin]: Add snippet.

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

* gnu/packages/cdrom.scm (abcde): New variable.

* gnu/packages/cdrom.scm (cd-discid): New variable.

* gnu/packages/package-management.scm (guix-devel): Update.