gnu: dconf: Update to 0.40.0.

* gnu/packages/gnome.scm (dconf): Update to 0.40.0.
[configure-flags]: Fix the doc flag; it's named 'gtk_doc', not
'enable-gtk-doc'.

gnu: gtkmm: Update to 4.4.0.

* gnu/packages/gtk.scm (gtkmm): Update to 4.4.0.  Delete trailing #t.

gnu: gtkmm-3: Update to 3.24.5.

* gnu/packages/gtk.scm (gtkmm-3): Update to 3.24.5.
[arguments]: Use meson-0.59.

gnu: Add meson-0.59.

Since gtkmm@3 at least requires it, to workaround a possible new bug in Meson.
Keep Meson at 0.60, because it also introduces useful features, such as
validating that the build options used exist.

* gnu/packages/build-tools.scm (meson-0.59): New variable.

gnu: Add cling.

* gnu/packages/cpp.scm (cling): New variable.
(llvm-cling): New private variable.
(clang-cling): Likewise.
* gnu/packages/patches/cling-use-shared-library.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Register it.

gnu: python-lit: Update to 12.0.1.

* gnu/packages/check.scm (python-lit): Update to 12.0.1.

gnu: python2-lit: Remove package.

* gnu/packages/check.scm (python2-lit): Remove package.

gnu: ldc: Update to 1.27.1.

* gnu/packages/dlang.scm (ldc-bootstrap): Rename to...
(ldc-bootstrap-0.17): ... this.  Fix indentation.  Disable tests.
[phases]: Remove test related patching.
{patch-phobos}: Rename to ...
{patch-paths}: ... this.
[inputs]: Remove llvm-6, which is propagated by clang-6.
(ldc-bootstrap-1.12): New variable, based on the previous ldc.
[source]: Use the official release tarball.
[build-type]: Set the build type to Release.
[configure-flags]: Pass the -GNinja configure flag.
[phases]{patch-paths}: Override to adjust for changed paths.
{build, install}: Override to use ninja.
[native-inputs]: Add ld-gold-wrapper.  Update llvm to version 11 and use
ldc-bootstrap-0.17 as the bootstrapping D compiler.  Add ninja.  Remove the
phobos-src, druntime-src and dmd-testsuite-src source inputs, now included in
the official release.
(ldc-bootstrap-1.24): Other intermediate variant for bootstrapping purposes.
(ldc): Update to 1.27.1.
[make-flags]: New argument.
[configure-flags]: Adjust.
[phases]{fix-compiler-rt-library-discovery}: New phase.
{patch-paths-in-tests}: Likewise.
{disable-problematic-tests}: Likewise.  Compared to before, many GDB tests are
reinstated.
{set-cc-and-cxx-to-use-clang}: New phase.
{tests}: Override.
[inputs]: Update clang to version 11. Bootstrap from a stage 1 version of
itself.
* gnu/packages/patches/ldc-bootstrap-disable-tests.patch: Delete file.
* gnu/packages/patches/ldc-disable-phobos-tests.patch: Likewise.
* gnu/local.mk: De-register them.

gnu: gdb: Update to 11.1 and remove gdb-9.2.

* gnu/packages/gdb.scm (gdb-10): Rename to...
(gdb-11): ... and update.  Update comment about disabled tests.
[origin]: Delete patch, integrated  upstream.
(gdb-9.2): Delete variable, no longer used.
(gdb): Set alias to gdb-11.
* gnu/packages/patches/gdb-hurd.patch: Delete file.
* gnu/packages/patches/gdb-9.2-sim-ppc-fno-common.patch: Likewise.
* gnu/local.mk (dist_patch_DATA): De-register them.

gnu: python-numpy: Update to 1.21.3 and cleanup.

* gnu/packages/python-xyz.scm (python-numpy): Update to 1.21.3.
[native-inputs]: Add python-hypothesis and python-pytest-xdist.
[phases]: Delete trailing #t.  Do not explicitly reorder the check phase, as
it already runs after the install phase for the python build system.
{configure-blas-lapack}: Rename to...
{configure-blas}: ... this, to cleanup remnants of lapack left in commit
6623d1cd7f3.
{check}: Honor TESTS?.  Invoke the tests via the runtests.py script and enable
parallel tests.
(python2-numpy-1.8)[phases]{configure-blas-lapack}: Likewise (as for the
python-numpy package).

gnu: zxing-cpp: Update to 1.2.0-0.00783db.

* gnu/packages/aidc.scm (zxing-cpp): Update to 1.2.0-0.00783db.
[version]: Use git-version.
[source]: Adjust accordingly.
[native-inputs]: Replace googletest-source by the regular googletest package.
Add fmt.
[arguments]: Remove field.
(zxing-cpp-1.2): New variable.
* gnu/packages/gstreamer.scm (gst-plugins-bad): Skip failing test.
[inputs]: Use zxing-cpp-1.2.

gnu: mesa: Enable support for OpenGL ES 1.1 and 2.0.

* gnu/packages/gl.scm (mesa)[native-inputs]: Add python-libxml2.  Remove TODO
comment.

gnu: mesa: Replace obsolete vulkan-overlay-layer build option.

The option has been replaced by `vulkan-layers', an array of options.

* gnu/packages/gl.scm (mesa): Remove trailing #t.
[configure-flags]: Replace the vulkan-overlay-layer build option by
vulkan-layers.

gnu: gstreamer: Disable the pipelines-seek test.

* gnu/packages/gstreamer.scm (gstreamer)
[phases]{disable-problematic-tests}: New phase.

gnu: gdk-pixbuf: Remove obsolete jasper support.

The newer meson 0.60 failed the build because the jasper flag no longer
exists.

* gnu/packages/gtk.scm (gdk-pixbuf)[configure-flags]<jasper>: Remove configure
flag.
[phases]{patch-docbook}: Remove condition and TODO comment.
[inputs]: Remove jasper.

gnu: python-dateutil: Update to 2.8.2.

* gnu/packages/time.scm (python-dateutil): Update to 2.8.2.

gnu: python-six-bootstrap: Update to 1.16.0.

* gnu/packages/python-build.scm (python-six-bootstrap): Update to 1.16.0.

gnu: python-pytest: Update to 6.2.5.

* gnu/packages/check.scm (python-pytest): Update to 6.2.5.

gnu: python-dbusmock: Update to 0.24.0.

* gnu/packages/python-xyz.scm (python-dbusmock): Update to 0.24.0.  Delete
trailing #t.

gnu: boost: Update to 1.77.0.

* gnu/packages/boost.scm (boost): Update to 1.77.0.