From a3daca1b132d072070fd35236da6ce32ffc973b7 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sat, 26 Jan 2013 14:33:03 +0000
Subject: [PATCH] Allow depending on requirement class or instance.

---
 Library/Homebrew/dependencies.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Library/Homebrew/dependencies.rb b/Library/Homebrew/dependencies.rb
index 4a4cd6d91f..b519de111e 100644
--- a/Library/Homebrew/dependencies.rb
+++ b/Library/Homebrew/dependencies.rb
@@ -54,6 +54,12 @@ private
       Dependency.new(spec.name, tag)
     when Dependency, Requirement
       spec
+    when Class
+      if spec < Requirement
+        spec.new
+      else
+        raise "#{spec} is not a Requirement subclass"
+      end
     else
       raise "Unsupported type #{spec.class} for #{spec}"
     end