gnu: python-typing-extensions: Move to (gnu packages python-build).

* gnu/packages/python-xyz.scm (python-typing-extensions): Move to...
* gnu/packages/python-build.scm (python-typing-extensions): ... here.

gnu: Remove python-typing-extensions-next.

* gnu/packages/python-xyz.scm (python-typing-extensions-next): Delete variable.

gnu: python-typing-extensions: Use pyproject-build-system.

* gnu/packages/python-xyz.scm (python-typing-extensions)
[arguments]: Remove #:phases argument.
[native-inputs]: Remove python-pypa-build.

gnu: python-flit-core-bootstrap: Update to 3.8.0.

* gnu/packages/python-build.scm (python-flit-core-bootstrap): Update to 3.8.0.
[home-page]: Update URL.

gnu: python-poetry-core: Update to 1.5.2.

* gnu/packages/python-build.scm (python-poetry-core): Update to 1.5.2.
[source]: Adjust URL.
[build-system]: Use pyproject-build-system.
[arguments]: New field.

gnu: python-pep517-bootstrap: Add TODO comment.

* gnu/packages/python-build.scm (python-pep517-bootstrap): Add TODO comment.

gnu: python-wheel: Update to 0.40.0.

* gnu/packages/python-build.scm (python-wheel): Update to 0.40.0.
[home-page]: Update URL.

gnu: python-setuptools: Update to 67.6.1.

* gnu/packages/python-build.scm (python-setuptools): Update to 67.6.1.

gnu: python-pip: Update to 23.1.

* gnu/packages/python-build.scm (python-pip): Update to 23.1.

gnu: python-tomli-w: Use pyproject-build-system.

* gnu/packages/python-build.scm (python-tomli-w) [build-system]: Use
pyproject-build-system.
[arguments]: Remove #:phases arguments.

gnu: python-tomli: Update to 2.0.1.

* gnu/packages/python-build.scm (python-tomli): Update to 2.0.1.
[build-system]: Use pyproject-build-system.
[arguments]: Remove build and install phase overrides.  Add add-self-to-path.
[native-inputs]: Remove python-pypa-build and input labels.

gnu: python-pathspec: Update to 0.11.1.

* gnu/packages/python-build.scm (python-pathspec): Update to 0.11.1.
[home-page]: Update URL.

gnu: Add python-trove-classifiers.

* gnu/packages/python-build.scm (python-trove-classifiers): New variable.

gnu: python-xyz: Move some packages to (gnu packages python-build).

This is to prepare for the new 'python-hatchling' build package, which has
these dependencies.

* gnu/packages/python-xyz.scm (python-pathspec, python-pluggy): Move to...
* gnu/packages/python-build.scm: ... here.  Re-organize definitions a bit,
with comments.

gnu: libsoup: Depend on Samba only on supported systems.

This unlocks gtk+@3 on i686-linux, which so far was unavailable because
Samba depends on Rust.

* gnu/packages/gnome.scm (libsoup-minimal)[inputs]: Have 'samba/pinned'
dependency only on supported systems.

gnu: python-shiboken-2: Fix compilation with Python 3.10.

* gnu/packages/patches/python-shiboken-2-compat.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/qt.scm (python-shiboken-2): Use it.

gnu: xdot: Complete atk to at-spi2-core transition.

This is a followup to c000352c27f511dfb5569bef09f9b774d6100117.

* gnu/packages/graphviz.scm (xdot)[arguments]: In 'wrap' phase, change
"atk" to "at-spi2-core".

gnu: emacs-xelb: Fix compilation error with xcb-proto@1.15.

* gnu/packages/patches/emacs-xelb-ignore-length-element.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/emacs-xyz.scm (emacs-xelb): Use it.

gnu: glibc: Reintroduce version 2.33.

* gnu/packages/base.scm (glibc-2.33): New variable.

gnu: lxqt-session: Fix handling of procps@4.

* gnu/packages/patches/lxqt-session-procps-4.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register patch.
* gnu/packages/lxqt.cm (lxqt-session): Apply patch.