1 Later versions of windows don't allow write access to Program Files by default.
3 This doesn't play nicely with pycparser's desire to write lextab and yacctab files.
4 To work around this problem, we disable that by applying the win7_c_parser.patch
5 manually to C:\Python27\Lib\site-packages\pycparser\c_parser.py before running
8 Automating this is left as an exercise for some other pyweek.