Clean up BuildEnvironment interface a bit

1 files changed, 6 insertions, 1 deletions

diff --git a/Library/Homebrew/build_environment.rb b/Library/Homebrew/build_environment.rb
index 0beee6c25..97a8fae42 100644
--- a/Library/Homebrew/build_environment.rb
+++ b/Library/Homebrew/build_environment.rb
@@ -1,10 +1,15 @@
 require 'set'
 
 class BuildEnvironment
-  def initialize settings
+  def initialize(*settings)
     @settings = Set.new(settings)
   end
 
+  def <<(o)
+    @settings << o
+    self
+  end
+
   def std?
     @settings.include? :std
   end