--- pygsl-0.9.4.ebuild.orig	2009-09-28 13:46:42.000000000 +0200
+++ pygsl-0.9.4.ebuild	2009-09-28 13:45:11.000000000 +0200
@@ -17,6 +17,14 @@
 	dev-python/numpy"
 RDEPEND="${DEPEND}"
 
+src_unpack() {
+	unpack ${A}
+	cd "${S}"
+	if has_version '>=sci-libs/gsl-1.13'; then
+		epatch "${FILESDIR}/${P}-obsolete-units.patch"
+	fi
+}
+
 src_test() {
 	cd "${S}/tests"
 	PYTHONPATH=$(ls -d ../build/lib*) "${python}" run_test.py || die "tests failed"