Index: install.cc
===================================================================
RCS file: /cvs/cygwin-apps/setup/install.cc,v
retrieving revision 2.94
diff -p -u -r2.94 install.cc
--- install.cc	28 Jan 2010 22:59:09 -0000	2.94
+++ install.cc	25 Feb 2010 19:22:04 -0000
@@ -76,6 +76,9 @@ static BoolOption NoReplaceOnReboot (fal
 				     "Disable replacing in-use files on next "
 				     "reboot.");
 
+static BoolOption NoMD5Sums (false, '5', "no-md5sums",
+	"Don't validate md5 checksums before installing packages");
+
 struct std_dirs_t {
   const char *name;
   mode_t mode;
@@ -713,6 +716,9 @@ do_install (HINSTANCE h, HWND owner)
 
 void md5_one (const packagesource& pkgsource)
 {
+  if (NoMD5Sums)
+    return;
+
   if (pkgsource.md5.isSet() && pkgsource.Cached ())
   {
     std::string fullname (pkgsource.Cached ());