ara fails to build with Sphinx 4.0.2 in Fedora 35 (currently Rawhide).

+ sphinx-build -b html doc/source doc/build/html
Running Sphinx v4.0.2
making output directory... done
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 14 source files that are out of date
updating environment: [new config] 14 added, 0 changed, 0 removed
reading sources... [  7%] ansible-configuration
reading sources... [ 14%] ansible-plugins-and-use-cases
reading sources... [ 21%] api-configuration
reading sources... [ 28%] api-documentation
reading sources... [ 35%] api-security
reading sources... [ 42%] api-usage
reading sources... [ 50%] changelog-release-notes
reading sources... [ 57%] cli
reading sources... [ 64%] container-images
reading sources... [ 71%] contributing
reading sources... [ 78%] distributed-sqlite-backend
reading sources... [ 85%] faq
reading sources... [ 92%] getting-started
reading sources... [100%] index
looking for now-outdated files... none found
pickling environment... done
checking consistency... done
preparing documents... done
writing output... [  7%] ansible-configuration
writing output... [ 14%] ansible-plugins-and-use-cases
Exception occurred:
  File "/usr/lib/python3.10/site-packages/sphinx/highlighting.py", line 127, in get_lexer
    lexer = lexer_classes[lang](**opts)
TypeError: 'AnsibleYamlLexer' object is not callable


For the logs from testing build attempts, see:
https://copr.fedorainfracloud.org/coprs/ksurma/pygments-2.9.0/package/ara/

You can test you package using Koji scratch build
koji build --scratch <srpm>

For details regarding the Sphinx change, see https://fedoraproject.org/wiki/Changes/Sphinx4
Let us know here if you have any questions. Thank you!