gnu: abseil-cpp: Update to 20210324.2.

But keep the older variant for Tensorflow.

* gnu/packages/cpp.scm (abseil-cpp-20200923.3): Renamed older variant.
(abseil-cpp): New variable.
* gnu/packages/machine-learning.scm (tensorflow-lite)
[inputs]: Adjust to use the older abseil-cpp-20200923.3.
* gnu/packages/rpc.scm (grpc-1.16.1)[native-inputs]: Likewise.

Co-authored-by: Greg Hogan <code@greghogan.com>

gnu: abseil-cpp: Remove googletest patch.

* gnu/packages/patches/abseil-cpp-fix-gtest.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): De-register it.
* gnu/packages/cpp.scm (abseil-cpp)[source]: Remove patch.

Co-authored-by: Greg Hogan <code@greghogan.com>

gnu: googletest: Update to 1.11.0.

* gnu/packages/check.scm (googletest): Update to 1.11.0.

Revert commits made to resolve a gdk-pixbuf+svg propagation issue.

Fixes <https://issues.guix.gnu.org/50957>.

This reverts the following commits:

 - 42231bc (gnu: cheese: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - ad6a950 (gnu: mutter: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - 5e02d1a (gnu: cogl: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - 5c467b2 (gnu: libgweather: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - 26487f6 (gnu: librsvg-next: Do not propagate gdk-pixbuf)
 - d891922 (gnu: librsvg: Do not propagate gdk-pixbuf)
 - 22476d3 (gnu: libgsf: Do not propagate gdk-pixbuf)
 - 099ca0e (gnu: libnotify: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - fb6a1ff (gnu: appstream-glib: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)
 - 4fb525d (gnu: weasyprint: Propagate gdk-pixbuf+svg rather than gdk-pixbuf)

These commits were made to resolve a gdk-pixbuf loaders clash that could occur
in a profile when both gdk-pixbuf and gdk-pixbuf+svg were propagated.
Unfortunately, librsvg really needs to propagate gdk-pixbuf itself, which
would introduce a cycle.  Packages such as 'efl' were broken as a result of
not propagating gdk-pixbuf.

A more definitive fix will be proposed for core-updates, which includes a
profile hook to generate the gdk-pixbuf loaders.cache file, as well as a build
phase and search path specification, that should resolve the issue for good.

gnu: pulseaudio: Update to 15.0.

The 'bluez5' configuration options is removed to ease transformation of the
package by users.  It is auto-enabled by Meson based on the inputs available,
so it's still enabled in this package.
* gnu/packages/pulseaudio.scm (pulseaudio): Update to 15.0.
[arguments]: Fix the 'oss-output' value and remove the 'bluez5' option.
[inputs]: Add 'elogind'.

Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>

gnu: lib2geom: Update to 1.1.

* gnu/packages/graphics.scm (lib2geom): Update to 1.1.
[source]: Remove patches, modules and snippet fields.
[phases]: Remove trailing #t.
* gnu/packages/patches/lib2geom-fix-tests.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): De-register it.

gnu: e2fsprogs: Update to 1.46.4.

This resolves a test failure on armhf-linux (when building on a aarch64-linux
system).

* gnu/packages/linux.scm (e2fsprogs): Update to 1.46.4.  Remove trailing #t.

gnu: python-gst: Update to 1.19.2.

* gnu/packages/gstreamer.scm (python-gst): Update to 1.19.2.
[meson]: Use meson-0.55.

gnu: gst-editing-services: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-editing-services): Update to 1.19.2.
[meson]: Use meson-0.55.

gnu: gst-libav: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-libav): Update to 1.19.2.
[source]: Re-indent origin.  Delete patches field.
[meson]: Use meson-0.55.
* gnu/packages/patches/gst-libav-64channels-stack-corruption.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): De-register it.

gnu: gst-plugins-ugly: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-plugins-ugly): Update to 1.19.2.  Delete
trailing #t.
[patches]: Delete field.
[meson]: Use meson-0.55.
* gnu/packages/patches/gst-plugins-ugly-fix-out-of-bound-reads.patch: Delete
file.
* gnu/local.mk (dist_patch_DATA): De-register it.

gnu: gst-plugins-bad: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-plugins-bad): Update to 1.19.2.
* gnu/packages/patches/gst-plugins-bad-fix-overflow.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): De-register it.

gnu: zxing-cpp: Update to 1.2.0.

* gnu/packages/aidc.scm (zxing-cpp): Update to 1.2.0.  Remove trailing #t.
[native-inputs]: Remove field.
[out-of-source?]: Remove argument.
[tests?]: Set to #f.
[configure-flags]: New argument.
[phases]: Remove argument.

gnu: gst-plugins-good: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-plugins-good): Update to 1.19.2.  Remove
trailing #t.
[patches]: Remove.
[meson]: Use meson-0.55.
* gnu/packages/patches/gst-plugins-good-CVE-2021-3497.patch: Delete file.
* gnu/packages/patches/gst-plugins-good-CVE-2021-3498.patch: Likewise.
* gnu/packages/patches/gst-plugins-good-fix-test.patch: Likewise.
* gnu/local.mk: De-register them.

gnu: gst-plugins-base: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gst-plugins-base): Update to 1.19.2
[origin]: Delete patches field.  Remove trailing #t.
[meson]: Use meson-0.55.
* gnu/packages/patches/gst-plugins-base-fix-id3v2-invalid-read.patch: Delete.
* gnu/local.mk (dist_patch_DATA): De-register.

gnu: gstreamer: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gstreamer): Update to 1.19.2.
[meson]: Use meson-0.55.
[phases]{disable-some-tests}: Delete phase.

gnu: gstreamer-docs: Update to 1.19.2.

* gnu/packages/gstreamer.scm (gstreamer-docs): Update to 1.19.2.  Remove
trailing #t.

gnu: python-sphinx: Update to 4.2.0.

* gnu/packages/sphinx.scm (python-sphinx): Update to 4.2.0.

gnu: python-sphinxcontrib-serializinghtml: Update to 1.1.5.

* gnu/packages/sphinx.scm (python-sphinxcontrib-serializinghtml): Update to 1.1.5.

gnu: python-sphinxcontrib-htmlhelp: Update to 2.0.0.

* gnu/packages/sphinx.scm (python-sphinxcontrib-htmlhelp): Update to 2.0.0.