3.6-nis-cygwin.patch

--- origsrc/Python-3.6.9/setup.py	2019-07-21 14:26:51.396871400 -0400
+++ src/Python-3.6.9/setup.py	2019-07-21 14:28:10.310207800 -0400
@@ -2224,7 +2224,7 @@ class PyBuildExt(build_ext):
         return ext
 
     def _detect_nis(self, inc_dirs, lib_dirs):
-        if host_platform in {'win32', 'cygwin', 'qnx6'}:
+        if host_platform in {'win32', 'qnx6'}:
             return None
 
         libs = []