Fix missing require in x11_dependency.rb

Fixes Homebrew/homebrew#18918.
2013-04-02 16:18:51 -05:00 · 2013-04-02 16:18:51 -05:00 · d13a39d1ac
commit d13a39d1ac
parent 4ebafbf62f
1 changed files with 1 additions and 0 deletions
--- a/Library/Homebrew/requirements/x11_dependency.rb
+++ b/Library/Homebrew/requirements/x11_dependency.rb
@ -1,4 +1,5 @@
 require 'requirement'
+require 'extend/set'

 class X11Dependency < Requirement
  include Comparable