Duplicate requirements into the *other* requirements list. :-/
@@ -76,7 +76,10 @@ setup(
'ufolint',
'unidecode',
'beziers',
- 'cmarkgfm'
+ 'cmarkgfm',
+ 'vharfbuzz',
+ 'collidoscope',
+ 'stringbrewer'
],
extras_require={
'docs': [
