Copy the defaults from the upower-service procedure to the
<upower-configuration> record type. This will allow making it the default
value for the upower-service-type, and deprecating the procedure. Export the
field accessors so that the <upower-configuration> record type becomes more
usable.

* gnu/services/desktop.scm (<upower-configuration>): Export it.
(upower-configuration-upower, upower-configuration-watts-up-pro?,
upower-configuration-poll-batteries?, upower-configuration-ignore-lid?,
upower-configuration-use-percentage-for-policy?,
upower-configuration-percentage-low, upower-configuration-percentage-critical,
upower-configuration-percentage-action, upower-configuration-time-low,
upower-configuration-time-critical, upower-configuration-time-action,
upower-configuration-critical-power-action): Add default and export.

* gnu/packages/chez.scm (chez-sockets)[version]: Use GIT-VERSION.
[source]: Use GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-scmutils)[arguments]: Always return #t from phases.
Substitute INVOKE for SYSTEM*.

* gnu/packages/chez.scm (chez-scmutils)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-mit)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-scheme)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (stex)[source]: Use GIT-FETCH and
GIT-FILE-NAME.
(chez-scheme)[arguments]: Adjust expected source directory name.

* gnu/packages/chez.scm (nanopass)[source]: Use GIT-FETCH and
GIT-FILE-NAME.
(chez-scheme)[arguments]: Adjust expected source directory name.

* gnu/packages/chez.scm (chez-scheme)[arguments]: Always return #t from phases.
Substitute INVOKE for SYSTEM*.

* gnu/packages/chez.scm (chez-cheme)[arguments]: Find ‘installsh’.
Remove some unnecessary code.

* gnu/packages/chez.scm (chez-irregex)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-matchable)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-web)[version]: Use GIT-VERSION.
[source]: Use GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-srfi)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

* gnu/packages/chez.scm (chez-fmt)[arguments]: Always return #t from phases.
Substitute INVOKE for SYSTEM*.

* gnu/packages/chez.scm (chez-web)[arguments]: Always return #t from phases.

* gnu/packages/compression.scm (unshield): Update to 1.4.3.
[inputs]: Add unshield-baldurs_gate_patch_v1_1_4315_international.zip.
[arguments]: Use it.

* gnu/packages/lisp.scm (stumpwm)[native-inputs]: Add texinfo.
[argument]: Add new ‘install-manual’ phase.

* gnu/packages/linux.scm (%linux-libre-version): Update to 4.20.10.
(%linux-libre-hash): Update hash.

* gnu/packages/linux.scm (%linux-libre-4.19-version): Update to 4.19.23.
(%linux-libre-4.19-hash): Update hash.

* gnu/packages/linux.scm (%linux-libre-4.14-version): Update to 4.14.101.
(%linux-libre-4.14-hash): Update hash.

* gnu/packages/linux.scm (linux-libre-4.9): Update to 4.9.158.

Includes fixes for CVE-2018-18335, CVE-2018-18356, and CVE-2019-5785.

* gnu/packages/gnuzilla.scm (%icecat-version): Update to 60.5.1-guix1.
(icecat-source)[upstream-firefox-source]: Update hash.

* gnu/packages/python.scm (pelican): Update to 4.0.1.

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

* gnu/packages/emacs-xyz.scm (emacs-cider): Update to 0.20.0

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

* gnu/packages/web-browsers.scm (luakit): Update to 2.1.

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

* gnu/packages/ibus.scm (ibus-rime): Update to 1.4.0.

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

* gnu/packages/ibus.scm (rime-data): Update to 0.38.20190131.

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

* gnu/packages/ibus.scm (librime): Update to 1.4.0.

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

Previously the same package could appear several times if several
variables were bound to it, as is notably the case for "python"
currently.  This, in turn, would lead to obnoxious "ambiguous package
specification" messages.

* gnu/packages.scm (generate-package-cache)[expand-cache]: Change RESULT
to RESULT+SEEN and adjust accordingly.
Call 'first' on the result of 'fold-module-public-variables*'.
* tests/packages.scm ("fold-available-packages with/without cache"):
Check for lack of duplicates in FROM-CACHE.

This minimizes the risk of locale-related warnings, at least for those
who use one of the bundled UTF-8 locales.

* guix/self.scm (guix-command)[glibc-utf8-locales]: New variable.
In program body, set GUIX_LOCPATH.

This will ensure people who download the binary installation tarball
do not get locale-related warnings, provided they use one of the
selected UTF-8 locales.

* gnu/packages/package-management.scm (guix)[arguments]: In
'wrap-program' phase, set GUIX_LOCPATH.
[inputs]: Add GLIBC-UTF8-LOCALES.

* guix/scripts/environment.scm (purify-environment): Add 'white-list'
parameter and honor it.
(create-environment): Add #:white-list parameter and honor it.
(launch-environment): Likewise.
(launch-environment/fork): Likewise.
(show-help, %options): Add '--inherit'.
(guix-environment): Define 'white-list' and pass it to
'launch-environment/fork'.
* tests/guix-environment.sh: Test '--inherit'.
* doc/guix.texi (Invoking guix environment): Document it.

* gnu/packages/emacs-xyz.scm (emacs-helm-slime): Update to 20190214.

* gnu/packages/emacs-xyz.scm (emacs-pulseaudio-control): Update to 20190105.

* gnu/packages/genimage.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

* gnu/packages/guile-xyz.scm (guile-hall)[description]: Break long line.
[home-page]: Merge lines.
[propagated-inputs]: Remove reference to default "out" output.

* gnu/packages/guile-xyz.scm (guile-hall)[source]: Use tag and git-file-name.

* gnu/packages/guile-xyz.scm (guile-hall)[license]: Use license: prefix.

* gnu/packages/guile-xyz.scm (guile-hall): Update to 0.2.