--- Python-3.8.0a4-orig/setup.py 2019-05-19 12:20:42.157823300 -0400 +++ Python-3.8.0a4/setup.py 2019-05-19 14:13:32.603602100 -0400 @@ -2216,7 +2216,7 @@ class PyBuildExt(build_ext): depends=sha3_deps)) def detect_nis(self): - if MS_WINDOWS or CYGWIN or HOST_PLATFORM == 'qnx6': + if MS_WINDOWS or HOST_PLATFORM == 'qnx6': self.missing.append('nis') return