diff --git a/x11-libs/flowcanvas/Manifest b/x11-libs/flowcanvas/Manifest
new file mode 100644
index 000000000..0eee88ac1
--- /dev/null
+++ b/x11-libs/flowcanvas/Manifest
@@ -0,0 +1 @@
+DIST flowcanvas-0.7.1.tar.bz2 139471 SHA256 047928d858fd1e9296a9984de7468c86bbe23fc42e286691b8f273541402c596
diff --git a/x11-libs/flowcanvas/files/graphviz-2.30.patch b/x11-libs/flowcanvas/files/graphviz-2.30.patch
new file mode 100644
index 000000000..1338a6832
--- /dev/null
+++ b/x11-libs/flowcanvas/files/graphviz-2.30.patch
@@ -0,0 +1,56 @@
+--- src/Canvas.cpp.orig	2011-01-10 00:19:58.000000000 +0100
++++ src/Canvas.cpp	2013-03-16 13:45:17.797462753 +0100
+@@ -1253,21 +1253,21 @@
+ 	 */
+
+ 	GVC_t* gvc = gvContext();
+-	Agraph_t* G = agopen((char*)"g", AGDIGRAPH);
++	Agraph_t* G = agopen((char*)"g", Agdirected, NULL);
+
+ 	nodes.gvc = gvc;
+ 	nodes.G = G;
+
+ 	if (_direction == HORIZONTAL)
+-		agraphattr(G, (char*)"rankdir", (char*)"LR");
++		agattr(G, AGRAPH, (char*)"rankdir", (char*)"LR");
+ 	else
+-		agraphattr(G, (char*)"rankdir", (char*)"TD");
++		agattr(G, AGRAPH, (char*)"rankdir", (char*)"TD");
+
+ 	unsigned id = 0;
+ 	for (ItemList::const_iterator i = _items.begin(); i != _items.end(); ++i) {
+ 		std::ostringstream ss;
+ 		ss << "n" << id++;
+-		Agnode_t* node = agnode(G, strdup(ss.str().c_str()));
++		Agnode_t* node = agnode(G, strdup(ss.str().c_str()), true);
+ 		if (boost::dynamic_pointer_cast<Module>(*i)) {
+ 			ss.str("");
+ 			ss << (*i)->width() / 96.0;
+@@ -1310,7 +1310,7 @@
+
+ 		assert(src_node && dst_node);
+
+-		Agedge_t* edge = agedge(G, src_node, dst_node);
++		Agedge_t* edge = agedge(G, src_node, dst_node, NULL, true);
+
+ 		if (use_length_hints && c->length_hint() != 0) {
+ 			std::ostringstream len_ss;
+@@ -1325,7 +1325,7 @@
+ 		if (partner) {
+ 			GVNodes::iterator p = nodes.find(partner);
+ 			if (p != nodes.end())
+-				agedge(G, i->second, p->second);
++				agedge(G, i->second, p->second, NULL, true);
+ 		}
+ 	}
+
+--- wscript.orig	2011-01-12 00:09:31.000000000 +0100
++++ wscript	2013-03-16 14:19:43.577462602 +0100
+@@ -41,6 +41,7 @@
+ 	conf.check_tool('compiler_cxx')
+ 	autowaf.check_pkg(conf, 'libgvc', uselib_store='AGRAPH',
+ 	                  atleast_version='2.8', mandatory=False)
++	conf.env['LIB_AGRAPH'] = ['cgraph' if l == 'graph' else l for l in conf.env['LIB_AGRAPH']]
+ 	autowaf.check_pkg(conf, 'gtkmm-2.4', uselib_store='GLIBMM',
+ 	                  atleast_version='2.10.0', mandatory=True)
+ 	autowaf.check_pkg(conf, 'libgnomecanvasmm-2.6', uselib_store='GNOMECANVASMM',
diff --git a/x11-libs/flowcanvas/files/ldconfig2.patch b/x11-libs/flowcanvas/files/ldconfig2.patch
new file mode 100644
index 000000000..d86e65eaf
--- /dev/null
+++ b/x11-libs/flowcanvas/files/ldconfig2.patch
@@ -0,0 +1,10 @@
+Index: flowcanvas-0.7.1/wscript
+===================================================================
+--- flowcanvas-0.7.1.orig/wscript
++++ flowcanvas-0.7.1/wscript
+@@ -85,5 +85,3 @@ def build(bld):
+ 
+ 	# Documentation
+ 	autowaf.build_dox(bld, 'FLOWCANVAS', FLOWCANVAS_VERSION, top, out)
+-
+-	bld.add_post_fun(autowaf.run_ldconfig)
diff --git a/x11-libs/flowcanvas/flowcanvas-0.7.1.ebuild b/x11-libs/flowcanvas/flowcanvas-0.7.1.ebuild
new file mode 100644
index 000000000..cacaba22b
--- /dev/null
+++ b/x11-libs/flowcanvas/flowcanvas-0.7.1.ebuild
@@ -0,0 +1,43 @@
+# Copyright 1999-2012 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/x11-libs/flowcanvas/flowcanvas-0.7.1.ebuild,v 1.6 2012/06/01 19:59:46 axs Exp $
+
+EAPI=4
+
+inherit waf-utils python eutils
+
+DESCRIPTION="Gtkmm/Gnomecanvasmm widget for boxes and lines environments"
+HOMEPAGE="http://wiki.drobilla.net/FlowCanvas"
+SRC_URI="http://download.drobilla.net/${P}.tar.bz2"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="amd64 x86"
+IUSE="debug doc"
+
+RDEPEND="dev-libs/boost
+	>=dev-cpp/gtkmm-2.4:2.4
+	>=dev-cpp/libgnomecanvasmm-2.6:2.6
+	>=media-gfx/graphviz-2.30"
+DEPEND="${RDEPEND}
+	=dev-lang/python-2*
+	virtual/pkgconfig
+	doc? ( app-doc/doxygen )"
+
+DOCS=( AUTHORS README ChangeLog )
+
+pkg_setup() {
+	python_set_active_version 2
+}
+
+src_prepare() {
+	epatch "${FILESDIR}/ldconfig2.patch"
+	epatch "${FILESDIR}/graphviz-2.30.patch"
+}
+
+src_configure() {
+	waf-utils_src_configure \
+		--htmldir=/usr/share/doc/${PF}/html \
+		$(use debug && echo "--debug") \
+		$(use doc && echo "--doc")
+}
diff --git a/x11-libs/flowcanvas/metadata.xml b/x11-libs/flowcanvas/metadata.xml
new file mode 100644
index 000000000..6292b8c1f
--- /dev/null
+++ b/x11-libs/flowcanvas/metadata.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<herd>proaudio</herd>
+<longdescription lang="en">
+	FlowCanvas is an interactive Gtkmm/Gnomecanvasmm widget for "boxes and
+	lines" environments (ie modular synths or interactive finite state automata
+	diagrams).
+</longdescription>
+</pkgmetadata>