--- java-config-2.2.0/setup.py.orig	2016-05-08 12:18:19.569801445 +0200
+++ java-config-2.2.0/setup.py	2016-05-08 12:19:18.289801422 +0200
@@ -22,6 +22,8 @@
 					sys.stdout.write(line.replace('@PACKAGE_VERSION@', package_version))
 				for line in fileinput.input(os.path.join(base, f),inplace=True):
 					sys.stdout.write(line.replace('@GENTOO_PORTAGE_EPREFIX@', eprefix))
+		for line in fileinput.input('src/launcher.bash',inplace=True):
+			sys.stdout.write(line.replace('@GENTOO_PORTAGE_EPREFIX@', eprefix))
 
 
 class jc_test(Command):