From 58a47f9b557644b5a83b265b40129111c06be215 Mon Sep 17 00:00:00 2001
From: Eric Hodel <ehodel@engineyard.com>
Date: Wed, 30 Jul 2008 18:16:54 -0700
Subject: [PATCH] Add task to create a graph of rake dependencies.

---
 .gitignore         |  2 +-
 rakelib/graph.rake | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 rakelib/graph.rake

diff --git a/.gitignore b/.gitignore
index 06a6728dce..83cc61a340 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,8 +41,8 @@ shotgun/lib/subtend/*.d
 \#*
 .\#*
 *.dSYM
+/rubinius_tasks.dot
 
-/vm/.deps
 /vm/log
 
 attic/externals/syd-parser/pkg
diff --git a/rakelib/graph.rake b/rakelib/graph.rake
new file mode 100644
index 0000000000..0ba362eee4
--- /dev/null
+++ b/rakelib/graph.rake
@@ -0,0 +1,19 @@
+task :graph, :exclude do |_, args|
+  begin
+    require 'graph'
+  rescue LoadError
+    abort 'install ZenHacks'
+  end
+
+  exclude = /#{args[:exclude]}/ if args[:exclude]
+
+  graph = Graph.new
+
+  Rake::Task.tasks.each do |task|
+    next if exclude and task.name =~ exclude
+    graph[task.name] = task.prerequisites
+  end
+
+  open 'rubinius_tasks.dot', 'w' do |io| io << graph end
+end
+