--- seahorse-3.12.2.ebuild	2014-07-23 19:31:03.000000000 +0400
+++ seahorse-3.12.2-r1.ebuild	2014-10-29 15:50:10.328155626 +0300
@@ -5,7 +5,7 @@
 EAPI="5"
 GCONF_DEBUG="yes"
 
-inherit gnome2
+inherit gnome2 pax-utils
 
 DESCRIPTION="A GNOME application for managing encryption keys"
 HOMEPAGE="https://wiki.gnome.org/Apps/Seahorse"
@@ -65,3 +65,15 @@
 		ITSTOOL=$(type -P true) \
 		VALAC=$(type -P true)
 }
+
+src_install() {
+	gnome2_src_install
+
+	if has_version '<app-crypt/p11-kit-0.20.3-r1' || has_version 'app-crypt/p11-kit[libffi]'; then
+		if has_version '>=dev-libs/libffi-3.0.13[pax_kernel]'; then
+			pax-mark E "${ED}usr/bin/seahorse"
+		else
+			pax-mark m "${ED}usr/bin/seahorse"
+		fi
+	fi
+}