https://bugzilla.wikimedia.org/show_bug.cgi?id=66010
Bug ID: 66010 Summary: Windows users get error: Unable to find vcvarsall.bat when using setup.py due to mwparserfromhell Product: Pywikibot Version: core (2.0) Hardware: All OS: All Status: NEW Severity: major Priority: Unprioritized Component: General Assignee: Pywikipedia-bugs@lists.wikimedia.org Reporter: legoktm.wikipedia@gmail.com Web browser: --- Mobile Platform: ---
See https://github.com/earwig/mwparserfromhell#installation and https://github.com/earwig/mwparserfromhell/issues/68
It was added as a dependency in Iaa77c0f7e0f7885f08c90581bde86c2c2aa88720.