--- src/ruby-2.4.0/lib/rubygems.rb.orig	2016-10-30 02:32:48.000000000 -0400
+++ src/ruby-2.4.0/lib/rubygems.rb	2017-03-07 23:37:48.944394100 -0500
@@ -121,7 +121,6 @@
 
   WIN_PATTERNS = [
     /bccwin/i,
-    /cygwin/i,
     /djgpp/i,
     /mingw/i,
     /mswin/i,