Add a link to the upstream issue for the Cython workaround

python-ruamel-yaml-clib.spec

@@ -66,7 +66,12 @@ cp -p '%{SOURCE1}' .
 %pyproject_buildrequires
 
 %build
-# cython refuses to cythonize a file in a directory that cannot be a Python module ¯\_(ツ)_/¯
+# cython refuses to cythonize a file in a directory that cannot be a Python
+# module ¯\_(ツ)_/¯
+#
+# Top-level structure seems to be incompatible with Cython 0.29.34
+# ('ruamel-yaml-clib-code._ruamel_yaml' is not a valid module name)
+# https://sourceforge.net/p/ruamel-yaml-clib/tickets/14/
 mkdir ruamel.yaml.clib
 mv *.pyx ruamel.yaml.clib
 cythonize -3 ruamel.yaml.clib/*.pyx
@@ -100,6 +105,7 @@ rmdir ruamel.yaml.clib
 - Add an import-only “smoke test”
 - Properly handle libyaml bundling
 - Port to pyproject-rpm-macros (“new Python guidelines”)
+- Add a link to the upstream issue for the Cython workaround
 
 * Fri Jan 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.2.6-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild