provide pathname for require statement in ruby demo

diff --git a/tclpkg/gv/demo/modgraph.rb b/tclpkg/gv/demo/modgraph.rb
index bd841a4d04bd9040b4d97e5e92075061dced0925..b5194aba5c33fc1af27fed4efa956a779ab994f6 100755 (executable)
--- a/tclpkg/gv/demo/modgraph.rb
+++ b/tclpkg/gv/demo/modgraph.rb
@@ -4,6 +4,7 @@
 
 # author: John Ellson <ellson@research.att.com>
 
+$:.push("/usr/lib/graphviz/ruby")
 require 'gv'
 
 G = Gv.digraph("G")