[rpms/python-pycxx] rawhide: Remove the use of %py3_install that is deprecated

[Barry Scott <barry@barrys-emacs.org>]

            A new commit has been pushed.

            Repo   : rpms/python-pycxx
            Branch : rawhide
            Commit : 80f46cc6d25866e8e4331f977ebbbda9a78f78a3
            Author : Barry Scott <barry@barrys-emacs.org>
            Date   : 2026-06-24T11:26:04+01:00
            Stats  : +15/-3 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/python-pycxx/c/80f46cc6d25866e8e4331f977ebbbda9a78f78a3?branch=rawhide

            Log:
            Remove the use of %py3_install that is deprecated
Document why setup.py is run and what happens if distutils are not available

---
diff --git a/python-pycxx.spec b/python-pycxx.spec
index 0bc81da..40358f9 100644
--- a/python-pycxx.spec
+++ b/python-pycxx.spec
@@ -46,8 +46,18 @@ for Python 3.  There is no non-devel package needed.
 
 
 %install
-%global py_install_args --prefix=%{_prefix} --install-headers=%{_includedir}/CXX --install-data=%{_usrsrc}
-%py3_install -- %{py_install_args}
+# PyCXX is a C++ source library it uses the setup.py to install C++ sources and headers
+# It cannot use the newer packaging that is for python source projects
+# setup.py depends on distutils
+
+# If distutils stops being available upstream will write a standalone
+# install script for the C++ files.
+/usr/bin/python3 setup.py install \
+    --skip-build \
+    --root %{buildroot} \
+    --prefix %{_prefix} \
+    --install-headers=%{_includedir}/CXX \
+    --install-data=%{_usrsrc}
 
 # Write pkg-config PyCXX.pc file
 mkdir -p %{buildroot}%{_datadir}/pkgconfig
@@ -84,9 +94,11 @@ test "$(pkg-config --modversion PyCXX)" = "%{version}"
 
 
 %changelog
-* Wed Jun 24 2026 barry Scott <barry@barrys-emacs.org> - 7.1.10-12
+* Wed Jun 24 2026 barry Scott <barry@barrys-emacs.org> - 7.2.0-1
 - update to pycxx 7.2.0
   remove python2 conditional sections
+  remove use of %py3_install that is deprecated
+  document what happens if distutils is nolonger available
 
 * Wed Jun 03 2026 Python Maint <python-maint@redhat.com> - 7.1.10-11
 - Rebuilt for Python 3.15