--- /usr/portage/sys-apps/mtree/mtree-2007.4.ebuild	2009-03-14 14:08:53.000000000 +0200
+++ /var/downloads/mtree-2007.4-r1.ebuild	2009-08-02 16:41:27.000000000 +0300
@@ -17,7 +17,7 @@
 S=${WORKDIR}/pkgsrc/pkgtools
 
 src_unpack() {
-	unpack ${A}
+	tar xjf ${DISTDIR}/${A} -C "${WORKDIR}" pkgsrc/pkgtools/libnbcompat/ pkgsrc/pkgtools/mtree
 	cd "${S}"
 
 	epatch "${FILESDIR}/${P}+glibc-2.8.patch"