--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- net-libs/serf/serf-0.2.0.ebuild
+++ net-libs/serf/serf-0.3.0.ebuild
@@ -23,7 +23,7 @@ 
 	unpack ${A}
 	cd "${S}"
 
-	epatch "${FILESDIR}"/0.1.2-disable-unneeded-linking.patch
+	epatch "${FILESDIR}"/${PV}-disable-unneeded-linking.patch
 	eautoreconf
 }