Factorize test suite support in (guix tests).

* guix/tests.scm: New file.
* Makefile.am (noinst_DATA): New variable.
  (GOBJECTS): Add guix/tests.go.
* tests/builders.scm (%store): Use 'open-connection-for-tests'
  from (guix tests).
* tests/derivations.scm: Likewise.
* tests/monads.scm: Likewise.
* tests/packages.scm: Likewise.
* tests/profiles.scm: Likewise.
* tests/union.scm: Likewise.
* tests/gexp.scm: Likewise.
  (guile-for-build): Remove.  Use (%guile-for-build) instead.
* tests/nar.scm (make-random-bytevector, %seed, random-text): Remove.
  (populate-file): Change 'make-random-bytevector' to 'random-bytevector'.
  Use (guix tests).
* tests/store.scm (%seed, random-text): Remove.
  Use (guix tests).

Add (guix monad-repl).

* guix/monad-repl.scm: New file.
* guix.scm: Add it.
* Makefile.am (MODULES): Add it.
* doc/guix.texi (The Store Monad): Document it.

Add (guix build emacs-utils).

* guix/build/emacs-utils.scm: New file.
* Makefile.am (MODULES): Add it.
* .dir-locals.el: Add indentation rules.

build: 'make clean' doesn't delete os-config.tmpl.

Fixes <http://bugs.gnu.org/18243>.
Reported by Andreas Enge and Mark H. Weaver.

* Makefile.am (EXAMPLES): New variable.
  (nobase_dist_guilemodule_DATA): Add it.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove gnu/system/os-config.tmpl.

doc: Make sure out-of-source-tree builds find os-config.tmpl.

* Makefile.am (BUILT_SOURCES): New variable.
* daemon.am (BUILT_SOURCES): Use +=.
* doc.am (BUILT_SOURCES, MAINTAINERCLEANFILES, EXTRA_DIST): Add
  doc/os-config.texi.
  (doc/os-config.texi): New target.
* doc/guix.texi (System Installation): Include os-config.texi.

gnu: linux-libre: Add i686 and x86_64 full-blown configs.

Thanks to Jason Self <jself@gnu.org> for the kernel configs.

* gnu/packages/linux.scm (kernel-config): New procedure.
  (linux-libre)[build-phase]: Copy it to .config.  Reduce the list of
  things appended to .config.
  [native-inputs]: Add "kconfig" input.
* gnu/packages/linux-libre-i686.conf,
  gnu/packages/linux-libre-x86_64.conf: New files, from
  <http://jxself.org/x86-32.txt> and <http://jxself.org/x86-64.txt>.
* Makefile.am (KCONFIGS): New variable.
  (nobase_dist_guilemodule_DATA): Add it.

guix {system,offload}: Improve reporting of syntax errors.

* guix/scripts/system.scm (read-operating-system) <catch handler>: Add
  case for 'syntax-error'.  Correct message for default case.
* guix/scripts/offload.scm (build-machines) <catch handler>: Add case
  for 'syntax-error'.
* tests/guix-system.sh: New file.
* Makefile.am (SH_TESTS): Add it.

Merge branch 'core-updates'

build: Add 'assert-final-inputs-self-contained' rule.

* build-aux/check-final-inputs-self-contained.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
  (assert-final-inputs-self-contained): New target.
  (distcheck-hook): Depend on it.

Merge branch 'master' into core-updates

Separate package description translations from string translations.

* po/packages/LINGUAS, po/packages/Makevars, po/packages/POTFILES.in:
  New files.
* po/guix/Makevars (DOMAIN): Change to "guix".
  (XGETTEXT_OPTIONS): Remove "--keyword=synopsis --keyword=description".
* po/guix/POTFILES.in: Remove gnu/packages/*.scm.
* configure.ac: Change to gettext 0.18.3.  Produce
  po/packages/Makefile.in.
* Makefile.am (SUBDIRS): Add po/packages.
* guix/ui.scm (%package-text-domain): New variable.
  (P_): New procedure.
  (package->recutils): Use 'P_' instead of '_'.
* guix/scripts/package.scm (find-packages-by-description): Use 'P_'
  instead of 'gettext'.

Move gettext files to 'po/guix'.

* po: Rename to...
* po/guix: ... this.
* po/guix/Makevars (subdir, top_builddir): Adjust accordingly.
* configure.ac: Change 'po/Makefile.in' to 'po/guix/Makefile.in'.
* Makefile.am (SUBDIRS): Change 'po' to 'po/guix'.

Merge branch 'master' into core-updates

build: Add --with-libgcrypt-libdir=DIR to support Debian's multi-arch layout.

* configure.ac: Remove 'LIBGCRYPT_PREFIX' and use 'LIBGCRYPT_LIBDIR'
  instead.  Add --with-libgcrypt-libdir=DIR option.
* Makefile.am (AM_DISTCHECK_CONFIGURE_FLAGS): Pass
  '--with-libgcrypt-libdir'.
* config-daemon.ac: Honor $LIBGCRYPT_LIBDIR when computing
  LIBGCRYPT_LIBS.

system: Add (guix build install) module.

* guix/build/vm.scm (install-grub, evaluate-populate-directive,
  reset-timestamps, register-closure): Move to...
* guix/build/install.scm: ... here.  New file.
* Makefile.am (MODULES): Add it.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Add (guix
  build install) to #:modules.

Add (guix build syscalls).

* guix/build/syscalls.scm, tests/syscalls.scm: New files.
* Makefile.am (MODULES): Add guix/build/syscalls.scm.
  (SCM_TESTS): Add tests/syscalls.scm.
* guix/utils.scm (%libc-errno-pointer, errno): Remove; take from (guix
  build syscalls).

Remove now unneeded (guix build gnome) module.

* guix/build/gnome.scm: Remove.
* Makefile.am (MODULES): Update accordingly.

system: Add (guix build activation).

* gnu/services/dmd.scm (dmd-configuration-file): Remove 'etc'
  parameter.  Move /etc activation code to...
* guix/build/activation.scm: ... here; new file.
* gnu/system.scm (operating-system-boot-script): Augment script: add
  (guix build activation) to the load path; call 'activate-etc'.
* Makefile.am (MODULES): Add guix/build/activation.scm.

Add (guix gexp).

* guix/gexp.scm: New file.
* tests/gexp.scm: New file.
* Makefile.am (MODULES): Add guix/gexp.scm.
  (SCM_TESTS): Add tests/gexp.scm.
* doc/guix.texi (Derivations): Add #:inputs in 'derivation' example.
  Mark 'build-expression->derivation' as deprecated, refer to
  "G-Expressions".  Remove paragraph about code strata.
  (G-Expressions): New node.

vm: Add (guix build vm) module.

* guix/build/vm.scm: New file.
* Makefile.am (MODULES): Add it.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Use it.