Please bump
dev-util/meld-1.3.2 ebuild from keruspe overlay works fine for me.
+*meld-1.3.2 (29 Aug 2010) + + 29 Aug 2010; Gilles Dartiguelongue <eva@gentoo.org> +meld-1.3.2.ebuild: + Version bump, bug #326409. Death to people doing custom Makefiles ! :)