* doc/guix.texi (Application Setup): Move the "fc-cache" instructions
next to the Fontconfig paragraph and make the command more visible.

This is a followup to d5a8e391.

* gnu/local.mk (GNU_SYSTEM_MODULES): Add linphone.scm.

This is a follow-up to commit f00f52a1.

* gnu/services/web.scm (mumi-shepherd-services): Ungexp variables.

This is a follow-up to commit f00f52a1.

* gnu/services/web.scm (<mumi-configuration>)[sender,smtp]: Add default
values.

* gnu/packages/mail.scm (mumi): Update to 0.0.0-12.bb2fe92.
[inputs]: Add guile-gcrypt, guile-redis, guile-webutils, mailutils.
* gnu/services/web.scm (<mumi-configuration>): New record type.
(mumi-configuration, mumi-configuration?, mumi-configuration-mumi,
mumi-configuration-mailer?, mumi-configuration-sender,
mumi-configuration-smtp): New procedures.
(mumi-shepherd-services): Accept configuration; adjust start commands; add
Shepherd service for mumi mailer.
(mumi-service-type): Pass default configuration.
* doc/guix.texi (Web Services): Update documentation.

* gnu/packages/guile.scm (guile-for-guile-emacs): Update to 2.1.2-1.15ca784.
[source]: Fetch from Guile upstream repository.
[arguments]: Enable tests; replace 'bootstrap phase; disable only broken
tests.
[native-search-paths]: Inherit from guile-2.2.

* gnu/packages/cran.scm (r-snowballc): Update to 0.7.0.

* gnu/packages/cran.scm (r-huge): Update to 1.3.4.1.

* gnu/packages/cran.scm (r-tidytree): Update to 0.3.3.

* gnu/packages/cran.scm (r-ggstance): Update to 0.3.4.

* gnu/packages/cran.scm (r-factoextra): Update to 1.0.7.

* gnu/packages/cran.scm (r-reticulate): Update to 1.15.
[native-inputs]: Add r-knitr.

* gnu/packages/cran.scm (r-vcd): Update to 1.4-7.

* gnu/packages/statistics.scm (r-sn): Update to 1.6-1.

* gnu/packages/statistics.scm (r-quantreg): Update to 5.55.

* gnu/packages/statistics.scm (r-xml2): Update to 1.3.0.
[propagated-inputs]: Remove r-rcpp.

* gnu/packages/statistics.scm (r-lattice): Update to 0.20-41.

* gnu/packages/audio.scm (gsm): Add a trailing newline to the replacement
text.  This makes it more robust in the face of future changes.

The tester binary generated gets installed with about 20 MiB of data files,
and the HTML documentation weighs another 500 KiB or so.  Move them to
separate outputs.

* gnu/packages/patches/mediastreamer-srtp2.patch: Rename to...
* gnu/packages/patches/mediastreamer2-srtp2.patch: ...this, to please 'guix
lint'.
* gnu/local.mk (dist_patch_DATA): Adapt.
* gnu/packages/linphone.scm (mediastreamer2)[patches]: Likewise.
[outputs]: Add the "doc" and "tester" outputs.
[phases]: Add a phase to move the HTML doc and tester binary and data to the
'doc' and 'tester' outputs, respectively.
[description]: Remove the unicode characters surrounding the word 'powerful'.

* gnu/packages/linux (linux-libre-arm-generic, linux-libre-arm-generic-5.6,
  linux-libre-arm64-generic, linux-libre-arm64-generic-5.6): Enable
  RTC_DRV_RK808 as a built-in in kernel configuration.

* gnu/packages/graphics.scm (ogre): Update to 1.12.5.
[source]: Add recursive? flag.
[arguments]: Update configure flags. Add a phase to fix CMakeLists.txt. Remove
unnecessary substitution.
[native-inputs]: Replace googletest with googletest-1.8.
[inputs]: Add pugixml.

* gnu/packages/patches/mediastreamer-srtp2.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/linphone.scm (mediastreamer2)[source]: Use it.

* gnu/packages/linphone (msamr): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/audio.scm (vo-amrwbenc): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/audio.scm (opencore-amr): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/linphone.scm (mswebrtc): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/linphone.scm (mssilk): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/linphone.scm (msopenh264): New variable.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

Reported by Florian Pelz <pelzflorian@pelzflorian.de>.

* gnu/bootloader/grub.scm (keyboard-layout-file): Replace commas with
hyphens in the first argument to 'computed-file'.
* gnu/system/keyboard.scm (keyboard-layout->console-keymap): Likewise.
* doc/guix.texi (Keyboard Layout): Add example.

* gnu/packages/music.scm (vmpk)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/music.scm (synthv1)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/kde-framework.scm (kxmlgui)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/kde-framework.scm (kplotting)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/kde-frameworks.scm (kio)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/kde-frameworks.scm (kiconthemes)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/kde-framework.scm (kdewebkit)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/image-processing.scm (itk-snap)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/gps.scm (gpsbabel)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/audio.scm (alsa-modular-synth)[inputs]: Move qttools from here...
[native-inputs]: ...to here.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

* gnu/packages/linphone.scm (liblinphone)[arguments]<#:configure-flags>: Add features.
<#:phases>[patch]: New phase.
[inputs]: Add glib, gtk2, notify.
[propagated-inputs]: Add murrine.