* guix/scripts/gc.scm (show-help): Update.
  (%options): Add `--references' and `--referrers'.
  (guix-gc)[symlink-target, store-directory]: New procedures.
  Handle the `list-references' and `list-referrers' actions.
* tests/guix-gc.sh: Add tests for `--references'.
* doc/guix.texi (Invoking guix gc): Document `--references' and
  `--referrers'.

* guix/store.scm (operation-id)[query-valid-derivers]: New value.
  (references, referrers, valid-derivers, query-derivation-outputs): New
  procedures.
* tests/store.scm ("references", "derivers"): New tests.

* guix/download.scm (%mirrors): Add `xorg'.

* gnu/packages/screen.scm (screen): Use GNU mirror.

* gnu/packages/libpng.scm (libpng): Switch to version 1.5.14.

* guix/ui.scm (show-what-to-build): Return (length req*).
* guix/scripts/pull.scm (guix-pull): Print an "already up to date"
  message when there's nothing to build.

* guix/scripts/pull.scm (unpack): Build (guix build download) first, as
  done in 855a8ad7.
  Reported by Andreas Enge <andreas@enge.fr>.

* scripts/guix.in: Make sure UPDATES-DIR is not #f.

* guix/scripts/pull.scm: New file.
* Makefile.am (MODULES): Add it.
* doc/guix.texi (Invoking guix pull): New node.
  (Invoking guix package): Add cross-ref to it.
* guix/ui.scm (config-directory): New procedure.
* scripts/guix.in: When `GUIX_UNINSTALLED' is undefined, add
  $XDG_CONFIG_HOME/guix/latest to the search path.
* po/POTFILES.in: Add guix/scripts/pull.scm.

* guix/scripts/package.scm (guix-package)[show-what-to-build]: Move to..
* guix/ui.scm (show-what-to-build): ... here.  Add a `store'
  parameter'.  Adjust callers.
* guix/scripts/build.scm (guix-build): Use it.  Remove `req' and `req*'
  variables.

* doc/guix.texi: Change @title and @subtitle syntax to please Texinfo 5.0.

* guix/scripts/download.scm (call-with-temporary-output-file): Move to
  ui.scm.
* guix/scripts/package.scm (switch-symlinks): Likewise.
* guix/ui.scm (call-with-temporary-output-file, switch-symlinks): New
  procedures.

* guix/build/download.scm (http-fetch): Adjust to use #:streaming? when
  using Guile 2.0.8+.

* guix/derivations.scm (imported-modules, compiled-modules): Add a
  `module-path' parameter.  Use it instead of %LOAD-PATH.

* gnu/packages/texinfo.scm (texinfo): Make PERL a propagated input.

* daemon.am (libstore_a_CPPFLAGS): Add missing -I, for schema.sql.hh.

* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_LISTEN): New macro.
  (options): Add `--listen'.
  (parse_opt): Handle it.
* doc/guix.texi (Invoking guix-daemon): Mention it.

* guix/store.scm (%daemon-socket-file): New variable.
  (open-connection): Use it as the default value for FILE.

* Makefile.am (guix/scripts/download.go): Add dependency on
  `guix/build/download.go'.
  Reported by Nikita Karetnikov <nikita@karetnikov.org>.

* guix/scripts/build.scm (%options): Remove hyphen from the name passed
  to `show-version-and-exit'.
* guix/scripts/download.scm (%options): Likewise.
* guix/scripts/gc.scm (%options): Likewise.
* guix/scripts/import.scm (%options): Likewise.
* guix/scripts/package.scm (%options): Likewise.

* gnu/packages/guile.scm (guile-reader): Change the character preceding the
  guile version number from '-' to '_' so that it will not be misinterpreted
  as the package version number.

* guix/scripts/build.scm (guix-build): Remove calls to `install-locale',
  `textdomain', etc., now redundant with `initialize-guix'.
* guix/scripts/download.scm (guix-download): Likewise.
* guix/scripts/import.scm (guix-import): Likewise.
* guix/scripts/package.scm (guix-package): Likewise.
* guix/ui.scm: Remove export of `install-locale' and `initialize-guix'.
  (initialize-guix): Add docstring.

* gnu/packages/texinfo.scm (texinfo): Update to 5.0.

* scripts/guix.in: New script.

* Makefile.am (bin_SCRIPTS): Add 'scripts/guix'.  Remove 'guix-build',
  'guix-download', 'guix-import', 'guix-package', and 'guix-gc'.

  (MODULES): Add 'guix/scripts/build.scm', 'guix/scripts/download.scm',
  'guix/scripts/import.scm', 'guix/scripts/package.scm', and
  'guix/scripts/gc.scm'.

* configure.ac (AC_CONFIG_FILES): Add 'scripts/guix'.  Remove 'guix-build',
  'guix-download', 'guix-import', 'guix-package', and 'guix-gc'.

* guix-build.in, guix-download.in, guix-gc.in, guix-import.in,
  guix-package.in: Remove shell script boilerplate.  Move to guix-COMMAND.in
  to guix/scripts/COMMAND.scm.  Rename module from (guix-COMMAND) to
  (guix scripts COMMAND).  Change "guix-COMMAND" to "guix COMMAND" in
  usage help string.

* pre-inst-env.in: Add "@abs_top_builddir@/scripts" to the front of $PATH.
  Export $GUIX_UNINSTALLED.

* tests/guix-build.sh, tests/guix-daemon.sh, tests/guix-download.sh,
  tests/guix-gc.sh, tests/guix-package.sh: Use "guix COMMAND" instead of
  "guix-COMMAND".

* doc/guix.texi: Replace all occurrences of "guix-COMMAND" with
  "guix COMMAND".

* po/POTFILES.in: Update.

* gnu/system/vm.scm: New file.
* Makefile.am (MODULES): Add it.

* gnu/packages/linux-initrd.scm: New file.

* gnu/packages/qemu.scm (qemu-kvm/smb-shares): New variable.
* gnu/packages/patches/qemu-multiple-smb-shares.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

* guix/packages.scm (package-output): New procedure.
* tests/packages.scm ("package-output"): New test.

* gnu/packages/make-bootstrap.scm (%guile-static): Add `name' field with
  `-static' suffix.

* gnu/packages/patches/guile-linux-syscalls.patch: Add `scm_reboot'.

* gnu/packages/qemu.scm (qemu-kvm): Add dependency on Samba; pass
  `--smbd' to ./configure.

* gnu/packages/samba.scm (samba): Add `add-lib-to-runpath' phase, and
  PatchELF as an input.

* gnu/packages/parted.scm: New file.
* Makefile.am (MODULES): Add it.

* gnu/packages/make-bootstrap.scm (%guile-static): Add
  `guile-linux-syscalls.patch' as an input, and use it.
* gnu/packages/patches/guile-linux-syscalls.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

* gnu/packages/linux.scm (linux-libre): Choose "defconfig" instead of
  "allmodconfig" since the latter enables all debugging features.  Add
  `CONFIG_CIFS=m'.

* gnu/packages/vim.scm: New file.
* Makefile.am (MODULES): Add it.

* gnu/packages.scm (find-newest-available-packages):
  New exported procedure.

* guix-build.in (newest-available-packages, find-best-packages-by-name):
  New procedures.
  (find-package): Use find-best-packages-by-name, to guarantee that
  if a version number is not specified, only the newest versions will
  be considered.

* guix-package.in (%options): Add --upgrade/-u option.
  (newest-available-packages, find-best-packages-by-name, upgradeable?):
  New procedures.
  (find-package): Use find-best-packages-by-name, to guarantee that
  if a version number is not specified, only the newest versions will
  be considered.
  (process-actions): Implement upgrade option.

* doc/guix.texi (Invoking guix-package): In the description of --install,
  mention that if no version number is specified, the newest available
  version will be selected.