See https://github.com/trentm/python-markdown2/pull/455#issuecomment-1182130274 https://github.com/trentm/python-markdown2/pull/455#issuecomment-1182538886 Maybe we print warnings when pygments isn't installed locally at the end of the test run. Or do something to make it clear not all tests have ran.