* Makefile.am (GUILD_COMPILE_FLAGS): New variable.
  (.scm.go): Use it.

* gnu/system/locale.scm (localedef-command)[maybe-version-directory]:
  New procedure.
  Use it.
  (locale-directory): Rename to...
  (single-locale-directory): ... this.  Check the version of LIBC to
  determine whether to create a "X.Y" sub-directory or to make it a
  symlink to ".".  Add the version number in the derivation name.
  (locale-directory): New procedure.
  (%default-locale-libcs): New variable.
* gnu/system.scm (<operating-system>)[locale-libcs]: New field.
  (operating-system-locale-directory): Pass it to 'locale-directory'.
* doc/guix.texi (operating-system Reference): Document 'locale-libcs'.
  (Locales)[Locale Data Compatibility Considerations]: New section.

* gnu/packages/base.scm (glibc-2.21): New variable.

* gnu/package/video.scm (ffmpeg)[inputs]: Add gnutls.
  [arguments]: Enable it.

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

* guix/scripts/system.scm (show-help): Display 'container' action.
  (system-derivation-for-action, guix-system): Add 'container' case.
  (perform-action): Skip GRUB config generation when building a container.
* doc/guix.texi (Invoking guix system): Document it.

* gnu/system/linux-container.scm (system-container): 'etc' is no longer
  a monadic value, and the result of 'file-union' must be lowered.

* gnu/packages/maths.scm (openblas)[arguments]: Make package
  substitutable when the system is MIPS.

* gnu/packages/maths.scm (openblas)[arguments]: Add "TARGET=SICORTEX" to
  make-flags when building for MIPS.

* gnu/packages/patches/xfce4-session-fix-xflock4.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/xfce.scm (xfce4-session)[source]: Add patch.

* gnu/packages/pcre.scm (pcre2): New variable.

* gnu/packages/freeipmi.scm (freeipmi): Update to 1.4.11.

* gnu/packages/fish.scm (inputs): Add python.

Reported by fps on #guix.

* doc/guix.texi (Using the Configuration System): Replace mention of
  Emacs with tcpdump.

* gnu/services.scm (modprobe-wrapper): Remove.
  (activation-script): Do not use it.  Remove calls to
  'activate-modprobe' and 'activate-ptrace-attach' in gexp.
  (%modprobe-wrapper, %linux-kernel-activation,
  linux-bare-metal-service-type, %linux-bare-metal-service): New
  variables.
* gnu/system.scm (essential-services): Add %LINUX-BARE-METAL-SERVICE to
  the list, unless CONTAINER? is true.

* gnu/packages/video.scm (ffmpeg)[arguments]: Move the configurable
  configure flag literals into the configure-flags argument. Call
  configure with these flags from the configure phase.

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

This patch changes the --ad-hoc flag to be positional.  That is, the
packages that appear before --ad-hoc are interpreted as packages whose
inputs should be in the environment; the packages that appear after are
interpreted as packages to be directly added to the environment.

* guix/scripts/environment.scm (tag-package-arg, compact): New
  procedures.
  (%options): Tweak the handlers for --load and --expression options.
  (options/resolve-packages): Preserve package mode tag.
  (parse-args): Tweak argument handler to use package tagging procedure.
  (guix-environment): Apply ad-hoc behavior on a per package basis.
* tests/guix-environment.sh: Add test.
* doc/guix.texi ("invoking guix environment"): Document new behavior of
  --ad-hoc.

* gnu/system/linux.scm (base-pam-services): Remove "xlock" and
  "xscreensaver".
* gnu/services/xorg.scm (<screen-locker>): New record type.
  (screen-locker-pam-services, screen-locker-setuid-programs,
  screen-locker-service): New procedures.
  (screen-locker-service-type): New variable.
* gnu/services/desktop.scm (%desktop-services): Use them.
* doc/guix.texi (X Window): Document 'screen-locker-service'.
  (Desktop Services): Mention it.

Fixes a regression introduced in commit 0adfe95a.

* gnu/system.scm (other-file-system-services)[requirements]: Remove.
  [add-dependencies]: New procedure.
  Use it.
* gnu/system/file-systems.scm (<file-system>)[dependencies]: Update
  comment.
* gnu/services/base.scm (mapped-device->dmd-service-name,
  dependency->dmd-service-name): New procedures.
  (file-system-service-type): Use it.

* gnu/packages/backup.scm (libchop): New variable.

* gnu/packages/gdbm.scm: Remove.
* gnu/packages/databases.scm (gdbm): New variable, from gdbm.scm.
* gnu/packages/avahi.scm, gnu/packages/cyrus-sasl.scm,
  gnu/packages/guile.scm, gnu/packages/mail.scm,
  gnu/packages/man.scm, gnu/packages/pulseaudio.scm,
  gnu/packages/python.scm, gnu/packages/ruby.scm,
  gnu/packages/sawfish.scm: Adjust accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove gdbm.scm.

* doc/guix.texi (Introduction): Mention Nix with a xref to
  "Acknowledgments".
  (Acknowledgments): Add link to nixos.org.

On PCs, it means that it will typically choose resolutions higher
than 640x480, which is nicer.

* gnu/system/grub.scm (eye-candy)[setup-gfxterm-body]: Leave 'gfxmode'
  unset.

* gnu/packages/maths.scm (openblas): Update to 0.2.15.

* gnu/packages/java.scm (icedtea7): Update to 2.6.2.

* gnu/packages/haskell.scm (ghc-glut): Move freeglut to
  propagated-inputs.

* gnu/packages/linux.scm (bluez): Update to 5.35.

* gnu/packages/emacs.scm (magit-svn): Update to 2.1.1.

* gnu/packages/emacs.scm (magit): Update to 2.3.0.

* gnu/services.scm (%modify-service, modify-services): New macros.
* gnu/services/base.scm (mingetty-service-type, guix-service-type):
  Export.
* emacs/guix-devel.el (guix-devel-keywords): Add 'modify-services'.
  Ditto in 'guix-devel-scheme-indent' call.
* doc/guix.texi (Using the Configuration System): Give an example of
  'modify-services'.
  (Service Reference): Document it.

* gnu/services/base.scm (<guix-configuration>)[substitute-urls]: New
  field.
  (guix-dmd-service): Honor it.
* doc/guix.texi (Base Services): Document it.

* guix/scripts/refresh.scm (%options): Handle comma-separated types for
  '--type' option.
  (guix-refresh): Adjust accordingly.
  (show-help): Likewise.
* doc/guix.texi (Invoking guix refresh): Document it.

* gnu/packages/bioinformatics.scm (pbtranscript-tofu): Update to 2.2.3.
  [source]: Remove bundled Cython sources in a snippet.  Replace
  ".tar.gz" extension in file-name field with "-checkout".
  [arguments]: Replace "enter-directory-and-clean-up" phase with
  "enter-directory" phase, and add "patch-setuppy" phase.
  [inputs]: Add python2-h5py.  Move python2-cython ...
  [native-inputs]: ... to this field.

* gnu/packages/algebra.scm (pari-gp)[inputs]: Add libx11, which enables
  plotting functions.

* tests/guix-environment-container.sh: Print the content of
  $tmpdir/mounts.

Fixes <http://bugs.gnu.org/21773>.
Reported by Jan Synáček <jan.synacek@gmail.com>.

* guix/ui.scm (make-regexp*): New procedure.
* guix/scripts/package.scm (options->installable, guix-package): Use it
  when processing user-provided regexps.

* gnu/build/linux-container.scm (namespaces->bit-mask): Remove
  CLONE_CHILD_CLEARTID and CLONE_CHILD_SETTID, which are unneeded.
  Discussed at <http://bugs.gnu.org/21694>.

Partly fixes <http://bugs.gnu.org/20217>.

* guix/store.scm (set-build-options): Change #:substitute-urls to
  default to #f.  Send the 'substitute-urls' pair only if
  SUBSTITUTE-URLS is true.
* guix/scripts/build.scm (set-build-options-from-command-line): Do not
  default to %DEFAULT-SUBSTITUTE-URLS for #:substitute-urls.
* guix/scripts/size.scm (%default-options): Remove 'substitute-urls'.

* guix/scripts/build.scm (show-help): Add help text for --file option.
  (%options): Add --file option.
  (options/resolve-packages): Handle 'file' options.
* tests/guix-build.sh: Add tests.
* doc/guix.texi ("invoking guix build"): Add doc.

* gnu/packages/python.scm (python-debian): Use @enumerate instead of
  @itemize.

* guix/scripts/substitute.scm (lookup-narinfos/diverse): New procedure.
  (lookup-narinfo): Use it.
  (process-query): Change #:cache-url to #:cache-urls.
  [valid?]: Remove 'narinfo?' check, which is no longer necessary.
  Use 'lookup-narinfos/diverse' instead of 'lookup-narinfos'.
  (process-substitution): Change #:cache-url to #:cache-urls.
  (%cache-url): Rename to...
  (%cache-urls): ... this.  Turn into a list.
  (guix-substitute): Remove 'getaddrinfo' test with early exit.  Adjust
  calls to 'process-query' and 'process-substitution'.
* tests/substitute.scm: Change '%cache-url' to '%cache-urls'.