[patch] This patch solved the problem for me

boxes-ebuild.patch (text/plain), 360 bytes, created by Andreas Proteus on 2016-06-17 03:05:27 UTC

--- /usr/portage/app-misc/boxes/boxes-1.1.2-r1.ebuild	2015-11-27 10:25:32.000000000 +0200
+++ /usr/portage/local/app-misc/boxes/boxes-1.1.2-r2.ebuild	2016-06-17 05:37:45.000000000 +0300
@@ -36,6 +36,6 @@
 	dobin src/boxes
 	doman doc/boxes.1
 	dodoc README.md
-	insinto /usr/share/boxes
-	doins boxes-config
+	insinto /usr/share
+	newins boxes-config boxes
 }