- Add doc-py38-to-py36.patch making building documentation

compatible with Python 3.6, which runs Sphinx on SLE.

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python312?expand=0&rev=67

python312.spec

@@ -179,6 +179,9 @@ Patch40:        fix-test-recursion-limit-15.6.patch
 # PATCH-FIX-SLE docs-docutils_014-Sphinx_420.patch bsc#[0-9]+ mcepl@suse.com
 # related to gh#python/cpython#119317
 Patch41:        docs-docutils_014-Sphinx_420.patch
+# PATCH-FIX-SLE doc-py38-to-py36.patch mcepl@suse.com
+# Make documentation extensions working with Python 3.6
+Patch44:        doc-py38-to-py36.patch
 BuildRequires:  autoconf-archive
 BuildRequires:  automake
 BuildRequires:  fdupes
@@ -209,6 +212,9 @@ BuildRequires:  mpdecimal-devel
 BuildRequires:  python3-Sphinx >= 4.0.0
 %if 0%{?suse_version} >= 1500
 BuildRequires:  python3-python-docs-theme >= 2022.1
+%if 0%{?suse_version} < 1599
+BuildRequires:  python3-dataclasses
+%endif
 %endif
 %endif
 %if %{with general}
@@ -470,7 +476,7 @@ rm Lib/site-packages/README.txt
 tar xvf %{SOURCE21}
 
 # Don't fail on warnings when building documentation
-# sed -i -e '/^SPHINXERRORHANDLING/s/-W//' Doc/Makefile
+sed -i -e '/^SPHINXERRORHANDLING/s/-W//' Doc/Makefile
 
 %build
 %if %{with doc}