--- /tmp/gdbus-codegen-2.40.0.ebuild	2014-07-17 17:44:23.565833592 +0300
+++ gdbus-codegen-2.40.0.ebuild	2014-07-17 17:46:07.101825294 +0300
@@ -20,6 +20,8 @@
 RDEPEND="${PYTHON_DEPS}"
 DEPEND="${RDEPEND}"
 
+# To ensure versions match wrt #517316
+RDEPEND="!<dev-libs/glib-${PV}:2"
 # To prevent circular dependencies with glib[test]
 PDEPEND=">=dev-libs/glib-${PV}:2"