--- portage/eclass/python-utils-r1.eclass	2013-03-28 05:31:15.000000000 -0700
+++ cygwin64-overlay/eclass/python-utils-r1.eclass	2013-04-08 17:06:56.958952000 -0700
@@ -601,7 +601,10 @@ python_optimize() {
 	for d; do
 		# make sure to get a nice path without //
 		local instpath=${d#${D}}
-		instpath=/${instpath##/}
+		while [[ ${instpath} == /* ]] ; do
+			instpath=${instpath#/}
+		done
+		instpath=/${instpath}
 
 		case "${EPYTHON}" in
 			python*)