* gnu/packages/patches/gnutls-server-name-fix.patch: New file.
* gnu/packages/gnutls.scm (gnutls)[source]: Use it.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/games.scm (xboing): New variable.

This reduces run time of (package-derivation s emacs) by ~1.5%.

* guix/utils.scm (bytevector->base16-string): Traverse BV from the end
  so as to use 'string-concatenate' instead of
  'string-concatenate-reverse'.

This reduces run time of (package-derivation s emacs) by ~5%.

* guix/derivations.scm (search-path*): New procedure.
  (imported-modules): Use it instead of 'search-path'.

This reduces run time of (package-derivation s emacs) by ~10%.

* guix/derivations.scm (derivation-path->base16-hash): New procedure.
  (derivation-hash): Use it.

* gnu/packages/gnutls.scm (gnutls): Update to 3.2.19.

* gnu/packages/xfig.scm (xfig, transfig)[arguments]: Have Makefile
  substitution match for more targets.

* emacs/guix-base.el (guix-switch-to-generation): New procedure.
* emacs/guix-info.el (guix-generation-info-insert-current): Insert button for
  switching to generation.
* emacs/guix-list.el (guix-generation-list-switch): New procedure.
* doc/emacs.texi (emacs List buffer, emacs Info buffer): Document switching
  generations.

* emacs/guix-main.scm (generation-param-alist): Add 'current' parameter.
* emacs/guix-base.el (guix-param-titles): Add title for 'current' parameter.
* emacs/guix-info.el: Display 'current' parameter.
  (guix-generation-info-current, guix-generation-info-not-current): New faces.
  (guix-generation-info-insert-current): New procedure.
* emacs/guix-list.el: Display 'current' column.
  (guix-generation-list-get-current): New procedure.

Based on 8c43746f by Ludovic Courtès <ludo@gnu.org>.
Fixes <http://bugs.gnu.org/18704>.

* gnu/packages/avahi.scm (nss-mdns)[source]: Add Debian and Fedora mirrors.

Fixes <http://bugs.gnu.org/18695>.
Reported by Mark H Weaver <mhw@netris.org>.

* gnu/packages/icu4c.scm (icu4c)[arguments]: In 'add-lib-to-runpath',
  reinstate RUNPATH on files under lib/.  Fixes a regression introduced
  in commit 7239828d.

* gnu/packages/ssh.scm (guile-ssh)[source]: Update to 0.7.1.
  [arguments]: Remove ssh/Makefile.am fiddling from 'autoreconf' phase.
  Remove #:parallel-build? argument.
  [inputs]: Add LIBGCRYPT-1.5.

Suggested by Artyom Poptsov <poptsov.artyom@gmail.com>.

* gnu/packages/ssh.scm (libssh)[source]: Add 'patches'.

* gnu/packages/package-management.scm (guix-0.7): Make public.
  (guix-devel)[source]: Update to commit 14e84b2d.
  [propagated-inputs]: New field.
  (guix): Alias for GUIX-DEVEL.

* guix/derivations.scm (graft-derivation): Add #:guile parameter; pass
  it to 'build-expression->derivation'.

* build-aux/list-packages.scm (package->sxml)[patches]: Handle the case
  where PATCH is an 'origin'.

* gnu/packages/databases.scm (unixodbc): New variable.

* gnu/packages/emacs.scm (magit): Update to 1.2.1.

* emacs/guix-list.el (guix-list-get-tabulated-entry): Call functions returning
  column value even for nil values.
  (guix-list-get-one-line): Adjust for accepting nil argument.

* guix/scripts/package.scm (switch-to-generation): New procedure.
  (switch-to-previous-generation): Use it.
  (guix-package): Adjust for '--switch-generation' option.
* tests/guix-package.sh: Test it.
* doc/guix.texi (Invoking guix package): Document it.

* guix/profiles.scm: (relative-generation): New procedure.
  (previous-generation-number): Use it.

Suggested by Ludovic Courtès.

* guix/profiles.scm (&profile-error, &profile-not-found-error,
  &missing-generation-error): New condition types.
* guix/ui.scm (call-with-error-handling): Handle new types.
* guix/scripts/package.scm (roll-back, guix-package): Raise
  '&profile-not-found-error' where needed.

* gnu/packages/patches/libarchive-CVE-2013-0211.patch,
  gnu/packages/patches/libarchive-fix-lzo-test-case.patch,
  gnu/packages/patches/libarchive-mtree-filename-length-fix.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/backup.scm (libarchive)[source]: Add patches.

* gnu/packages/xfig.scm (transfig): New variable.

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

* gnu/packages/image.scm (libjpeg): Upgrade to version 9a.

* gnu/packages/xorg.scm (imake): New variable.

Fixes <http://bugs.gnu.org/18690>.
Reported by Philip Woods <elzairthesorcerer@gmail.com>.

* tests/syscalls.scm ("swapoff, EINVAL/EPERM"): Rename to...
  ("swapoff, ENOENT/EINVAL/EPERM"): ... this.  Add ENOENT to the list of
  possible return values.

* gnu/packages/zip.scm (perl-zip): New variable.

* gnu/packages/ssh.scm (openssh): Update to 6.7p1.

* gnu/packages/gnuzilla.scm: Add copyright line for Mark H Weaver, which
  should have been added in 74c7af9f (gnu: icecat: Update to 31.1.1).

* guix/scripts/environment.scm: New file.
* Makefile.am (MODULES): Add it.
* doc/guix.texi ("Invoking guix environment"): New node.

Fixes a regression introduced in commit 300868ba.

* tests/guix-package.sh: Move 'module_dir' definition to the top, and
  "rm -rf" it from the top-most 'trap'.  Remove second use of 'trap'.

* doc/guix.texi (Using the Configuration System): Add xref to
  "operating-system Reference".
  (operating-system Reference): New section.
  (Networking Services): Add xref to it.

* doc/guix.texi (Daemon Offload Setup): Use @deftp for 'build-machine'.

* gnu/packages/icu4c.scm (icu4c): Apply the RUNPATH to the binaries,
  instead of the libs

* guix/profiles.scm: Do not use (guix ui) module.
  (right-arrow, manifest-show-transaction): Move and rename to...
* guix/ui.scm (right-arrow, show-manifest-transaction): ... here.
* tests/profiles.scm ("manifest-show-transaction"): Move to...
* tests/ui.scm ("show-manifest-transaction"): ... here.
  (guile-1.8.8, guile-2.0.9): New variables.
* emacs/guix-main.scm (process-package-actions): Rename
  'manifest-show-transaction' to 'show-manifest-transaction'.
* guix/scripts/package.scm (guix-package): Likewise.

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

* guix/ui.scm (call-with-error-handling): Add %GETTEXT-DOMAIN as a
  second argument to 'gettext'.

Before, there was a cycle along the lines of:

  (guix store) -> (guix nar) -> (guix ui) -> (guix store)

This caused problems, as discussed at:

  http://lists.gnu.org/archive/html/guix-devel/2014-10/msg00109.html

This patch removes cycles in the (guix ...) modules.

* guix/nar.scm (&nar-error, &nar-read-error, dump, write-contents,
  read-contents, %archive-version-1, write-file, restore-file): Move to...
* guix/serialization.scm: ... here.
* guix/store.scm: Remove dependency on (guix nar).
* guix/scripts/hash.scm, guix/scripts/offload.scm,
  guix/scripts/substitute-binary.scm, tests/nar.scm, tests/store.scm,
  tests/substitute-binary.scm: Adjust accordingly.