--- cacti-0.8.7i.ebuild	2011-12-12 10:27:34.000000000 +0200
+++ cacti-0.8.7i.ebuild	2011-12-13 18:29:38.807841091 +0200
@@ -7,7 +7,7 @@ EAPI="2"
 inherit eutils webapp depend.php
 
 # Support for _p* in version.
-MY_P=${P/_p*/}
+MY_P=${P/_p*/}-PIA-3.1
 UPSTREAM_PATCHES=""
 
 DESCRIPTION="Cacti is a complete frontend to rrdtool"
@@ -37,6 +37,8 @@ RDEPEND="snmp? ( >=net-analyzer/net-snmp
 	dev-lang/php[cli,mysql,xml,session,sockets]
 	|| ( <dev-lang/php-5.3[pcre] >=dev-lang/php-5.3 )"
 
+S="${WORKDIR}/${MY_P}"
+
 src_unpack() {
 	unpack ${MY_P}.tar.gz
 	if [[ -n ${UPSTREAM_PATCHES} ]]; then