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.

* gnu/packages/backup.scm (borg): Update to 1.1.9.
[arguments]: Remove the 'remove-documentation-timestamps' phase and adjust the
'install-doc' phase to ensure the manual pages are not a source of
non-determinism.

* gnu/packages/cran.scm (r-rsvd): New variable.

* gnu/packages/cran.scm (r-future-apply): New variable.

* gnu/packages/cran.scm (r-future): New variable.

* gnu/packages/cran.scm (r-globals): New variable.

* gnu/packages/cran.scm (r-listenv): New variable.

* gnu/packages/kde-plasma.scm (libksysguard)[home-page]: Set to
<https://userbase.kde.org/KSysGuard>.

* gnu/packages/kde-plasma.scm (kdecoration, kscreenlocker, libkscreen,
libksysguard): Update to 5.15.0.

* gnu/packages/kde-frameworks.scm (extra-cmake-modules, attica, bluez-qt,
breeze-icons kapidox, karchive, kcodecs, kconfig, kcoreaddons, kdbusaddons,
kdnssd, kguiaddons, ki18n, kidletime, kirigami, kitemmodels, kitemviews,
kplotting, ksyntaxhighlighting, kwayland, kwidgetsaddons, kwindowsystem,
modemmanager-qt, networkmanager-qt, oxygen-icons, prison, qqc2-desktop-style,
solid, sonnet, threadweaver, kactivities, kauth, kcompletion, kcrash,
kdoctools, kfilemetadata, kimageformats, kjobwidgets, knotifications,
kpackage, kpty, kunitconversion, baloo, kactivities-stats, kbookmarks,
kcmutils, kconfigwidgets, kdeclarative, kded, kdesignerplugin, kdesu,
kdewebkit, kemoticons, kglobalaccel, kiconthemes, kinit, kio, knewstuff,
knotifyconfig, kparts, kpeople, krunner, kservice, ktexteditor, ktextwidgets,
kwallet, kxmlgui, kxmlrpcclient, plasma-framework, kde-frameworkintegration,
kdelibs4support, khtml, kjs, kjsembed, kmediaplayer, kross): Update to 5.55.0.

* guix/gnu-maintenance.scm (latest-kde-release): Remove #:file->signature.

* gnu/packages/patches/clang-7.0-libc-search-path.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/llvm.scm (llvm, clang-runtime, clang): Update to 7.0.1.
(llvm-7.0.1): Remove variable.
(clang-from-llvm)[arguments]: Adjust phase to match Clang 7.
(llvm-6, clang-runtime-6, clang-6): New public variables.
* gnu/packages/dlang.scm (ldc)[native-inputs]: Change LLVM and CLANG to
LLVM-6.0 and CLANG-6.0.
* gnu/packages/gl.scm (mesa)[inputs]: Change from LLVM to LLVM-6.

* gnu/packages/llvm.scm (llvm, clang-runtime-from-llvm, clang-from-llvm,
llvm-3.9.1, llvm-3.7, llvm-3.6, llvm-3.5)[source](uri): Use HTTPS.
(emacs-clang-format)[description]: Likewise.

* gnu/packages/bioinformatics.scm (python-pyfit-sne): New variable.

* gnu/packages/game-development.scm (tiled): Update to 1.2.2.

* gnu/packages/game-development.scm (allegro-4): Update to 4.4.3.
[source]: Remove upstreamed patch.
* gnu/packages/patches/allegro4-mesa-18.2.5-and-later.patch:
Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

* gnu/packages/games.scm (teeworlds): Update to 0.7.2.

* gnu/packages/games.scm (gnubg): Update to 1.06.002.

* gnu/packages/games.scm (fortune-mod): Update to 2.6.2.

* gnu/packages/games.scm (chroma): Update to 1.16.

* gnu/packages/games.scm (gamine): Update to 1.6.

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

* gnu/packages/games.scm (vkquake): Update to 1.01.0.

* gnu/packages/ftp.scm (filezilla): Update to 3.40.0.

* gnu/packages/ftp.scm (libfilezilla)[source]: Hard-code NAME.

* gnu/packages/flashing-tools.scm (ifdtool): Update to 4.9.
[source]: Update source URI.

* gnu/packages/disk.scm (ndctl): Update to 64.1.
[inputs]: Add keyutils.

* gnu/packages/check.scm (cppcheck): Update to 1.87.

* gnu/packages/assembly.scm (fasm): Update to 1.73.08.

* gnu/packages/virtualization.scm (virt-manager): Update to 2.1.0.

It has nothing to do with XML.

* gnu/packages/xml.scm (libxls): Move from here…
* gnu/packages/statistics.scm (libxls): …to here.

* gnu/packages/xml.scm (libxls): Update to 1.5.0.
[source, home-page]: Update home page.
[arguments, native-inputs]: Remove all of them.