[RFC,00/26] deprecation of distutils

distutils is deprecated in Python 3.10 and will be removed in Python
3.12 (~October 2023).

This series inserts a deprecation warning into the distutils*.bbclasses
and drops or replaces distutils usage wherever possible.

Instead of distutils3-base, we introduce setuptools3-base, which also
incorporates distutils-common-base.

Remaining usage is in:
  * lib/recipetool/create_buildsys_python.py until we are ready to
    factor it out (and add pyproject.toml and setup.cfg handling)
  * oeqa selftests which are testing distutils3 functionality
  * glib-2.0: upstream is still using distutils.version.LooseVersion
  * gpgme: Still checks for distutils in m4/ax_python_devel.m4
  * python3-numpy: upstream still has a distutils/ module
  * python3-setuptools has a vendored _distutils

I might have missed something else.

No attempt has been made to look at layers outside of oe-core.

The intent is to let this percolate for a few weeks and then drop
distutils*.bbclasses (and move them to meta-python, but with the
warnings).

[YOCTO #14610]

The following changes since commit 6fca075a8d87d033359f81d476c8506df66ad53d:

  gcc: Drop no longer needed patch (2021-11-25 21:53:44 +0000)

are available in the Git repository at:

  git://push.openembedded.org/openembedded-core-contrib timo/core-deprecate-distutils_14610

Tim Orling (26):
  classes/distutils-*: add warning of deprecation
  setuptools: refactor for no distutils bbclasses
  python3-cython: DISTUTILS_* -> SETUPTOOLS_*
  dnf: inherit setuptools3-base instead of distutils
  libdnf: inherit setuptoools3-base not distutils
  python3-dbus: inherit setuptools3-base not distuils
  gpgme: inherit setuptools-base not distutils
  python3-pip: inherit setuptools3 not distutils3
  systemtap: use setuptools-base not distutils
  libcomps: inherit setuptools3-base not distutils
  createrepo-c: inherit setuptools3-base not distutils
  librepo: inherit setuptools3-base not distutils
  btrfs-tools: use setuptools3-base not distutils
  scripts/buildhistory-diff: drop use of distutils
  python3-pygobject: setuptools instead of distutils
  bind: inherit setuptools3-base instead of distutils
  python3-setuptools: do not depend on distutils
  sanity.bbclass: drop usage of distutils
  gstreamer1.0-python: inherit setuptools3-base
  recipetool/create_buildsys_python.py: less distutils
  waf.bbclass: drop usage of distutils
  dnf: drop python3-disutils dependency
  python3: refactor python-config patch
  lib/oe/terminal.py: use bb.version.LooseVersion
  python3native.bbclass: distutils -> sysconfig
  rootfs_rpm.bbclass: distutils -> sysconfig module

 meta/classes/distutils-common-base.bbclass    |  3 +
 meta/classes/distutils3-base.bbclass          |  3 +
 meta/classes/distutils3.bbclass               |  4 ++
 meta/classes/python3native.bbclass            |  2 +-
 meta/classes/rootfs_rpm.bbclass               |  2 +-
 meta/classes/sanity.bbclass                   | 16 ++---
 meta/classes/setuptools3-base.bbclass         | 31 +++++++++
 meta/classes/setuptools3.bbclass              | 67 +++++++++++++++++-
 meta/classes/waf.bbclass                      |  2 +-
 meta/lib/oe/terminal.py                       |  2 +-
 .../recipes-connectivity/bind/bind_9.16.23.bb |  2 +-
 .../btrfs-tools/btrfs-tools_5.15.bb           |  2 +-
 .../createrepo-c/createrepo-c_0.17.7.bb       |  2 +-
 meta/recipes-devtools/dnf/dnf_4.10.0.bb       |  3 +-
 .../libcomps/libcomps_0.1.18.bb               |  2 +-
 meta/recipes-devtools/libdnf/libdnf_0.65.0.bb |  2 +-
 .../librepo/librepo_1.14.2.bb                 |  2 +-
 .../python/python3-cython_0.29.24.bb          |  2 +-
 .../python/python3-dbus_1.2.18.bb             |  2 +-
 .../python/python3-pip_21.3.1.bb              |  2 +-
 .../python/python3-pygobject_3.42.0.bb        |  2 +-
 .../python/python3-setuptools_59.2.0.bb       |  1 -
 ...n-implement-legacy-disutils-behavior.patch | 68 +++++++++++++++++++
 .../python/python3/python-config.patch        | 55 ---------------
 .../recipes-devtools/python/python3_3.10.0.bb |  2 +-
 .../recipes-kernel/systemtap/systemtap_git.bb |  2 +-
 .../gstreamer/gstreamer1.0-python_1.18.5.bb   |  2 +-
 meta/recipes-support/gpgme/gpgme_1.16.0.bb    |  2 +-
 scripts/buildhistory-diff                     |  5 --
 .../lib/recipetool/create_buildsys_python.py  |  4 +-
 30 files changed, 204 insertions(+), 92 deletions(-)
 create mode 100644 meta/classes/setuptools3-base.bbclass
 create mode 100644 meta/recipes-devtools/python/python3/0001-python-config.in-implement-legacy-disutils-behavior.patch
 delete mode 100644 meta/recipes-devtools/python/python3/python-config.patch