Sync patch 251 with Python 3.10+ on Fedora < 36

Instruct pip to use distutils
-----------------------------

The current version of pip uses distutils on Python < 3.10,
so this should change nothing,
but future versions of pip may theoretically change that.

Instruct pypa/distutils to add /local/ addition to prefix
---------------------------------------------------------

Needed for setuptools 60+ installed/upgraded by pip or when we update it in rawhide.
Setuptools 60+ uses bundled pypa/distutils instead of the standard library distutils.

python3.9.spec

@@ -17,7 +17,7 @@ URL: https://www.python.org/
 #global prerel ...
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: Python
 
 
@@ -320,7 +320,7 @@ Patch189: 00189-use-rpm-wheels.patch
 %global pip_version 21.2.4
 %global setuptools_version 58.1.0
 
-# 00251 # 2eabd04356402d488060bc8fe316ad13fc8a3356
+# 00251 # 1b1047c14ff98eae6d355b4aac4df3e388813f62
 # Change user install location
 #
 # Set values of prefix and exec_prefix in distutils install command
@@ -328,7 +328,13 @@ Patch189: 00189-use-rpm-wheels.patch
 # is not detected to make pip and distutils install into separate location.
 #
 # Fedora Change: https://fedoraproject.org/wiki/Changes/Making_sudo_pip_safe
-# Downstream only: Awaiting resources to work on upstream PEP
+# Downstream only: Reworked in Fedora 36+/Python 3.10+ to follow https://bugs.python.org/issue43976
+#
+# pypa/distutils integration: https://github.com/pypa/distutils/pull/70
+#
+# Also set sysconfig._PIP_USE_SYSCONFIG = False, to force pip-upgraded-pip
+# to respect this patched distutils install command.
+# See https://bugzilla.redhat.com/show_bug.cgi?id=2014513
 Patch251: 00251-change-user-install-location.patch
 
 # 00328 # 367fdcb5a075f083aea83ac174999272a8faf75c
@@ -1794,6 +1800,10 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Sat Jan 08 2022 Miro Hrončok <mhroncok@redhat.com> - 3.9.9-4
+- Instruct pip to use distutils
+- Instruct pypa/distutils to add /local/ addition to prefix
+
 * Sat Jan 08 2022 Miro Hrončok <mhroncok@redhat.com> - 3.9.9-3
 - Rebuilt for https://fedoraproject.org/wiki/Changes/LIBFFI34