--- a/bakeconf.xml	Thu May 09 22:53:42 2013 -0700
+++ b/bakeconf.xml	Thu May 09 22:55:42 2013 -0700
@@ -823,6 +823,9 @@
       <source type="mercurial">
 	<attribute name="url" value="http://code.nsnam.org/ns-3-dev"/>
       </source>
+      <depends_on name="netanim-dev" optional="True"/>
+      <depends_on name="pybindgen-dev" optional="True"/>
+      <depends_on name="pyviz-prerequisites" optional="True"/>
       <build type="waf" objdir="yes">
 	<attribute name="configure_arguments" value="configure --prefix=$INSTALLDIR --enable-examples --enable-tests"/>
       </build>