Allow specifying a name attribute for X11Dependency

Library/Homebrew/dependency_collector.rb

@@ -74,10 +74,10 @@ private
       if MacOS.version >= :mountain_lion
         Dependency.new(spec.to_s, tag)
       else
-        X11Dependency.new(tag)
+        X11Dependency.new(spec.to_s, tag)
       end
     when :x11
-      X11Dependency.new(tag)
+      X11Dependency.new(spec.to_s, tag)
     when :xcode
       XcodeDependency.new(tag)
     when :mysql

Library/Homebrew/requirement.rb

@@ -8,7 +8,7 @@ class Requirement
   include Dependable
   extend BuildEnvironmentDSL
 
-  attr_reader :tags
+  attr_reader :tags, :name
 
   def initialize(*tags)
     @tags = tags.flatten.compact

Library/Homebrew/requirements.rb

@@ -59,10 +59,11 @@ class X11Dependency < Requirement
 
   env { x11 }
 
-  def initialize(*tags)
+  def initialize(name="x11", *tags)
     tags.flatten!
+    @name = name
     @min_version = tags.shift if /(\d\.)+\d/ === tags.first
-    super
+    super(tags)
   end
 
   satisfy :build_env => false do

Library/Homebrew/test/test_comparableset.rb

@@ -17,25 +17,25 @@ class ComparableSetTests < Test::Unit::TestCase
 
   def test_comparison_prefers_larger
     @set << X11Dependency.new
-    @set << X11Dependency.new('2.6')
+    @set << X11Dependency.new('x11', '2.6')
     assert_equal @set.count, 1
-    assert_equal @set.to_a, [X11Dependency.new('2.6')]
+    assert_equal @set.to_a, [X11Dependency.new('x11', '2.6')]
   end
 
   def test_comparison_does_not_merge_smaller
-    @set << X11Dependency.new('2.6')
+    @set << X11Dependency.new('x11', '2.6')
     @set << X11Dependency.new
     assert_equal @set.count, 1
-    assert_equal @set.to_a, [X11Dependency.new('2.6')]
+    assert_equal @set.to_a, [X11Dependency.new('x11', '2.6')]
   end
 
   def test_merging_sets
     @set << X11Dependency.new
     @set << Requirement.new
-    reqs = Set.new [X11Dependency.new('2.6'), Requirement.new]
+    reqs = Set.new [X11Dependency.new('x11', '2.6'), Requirement.new]
     assert_same @set, @set.merge(reqs)
 
     assert_equal @set.count, 2
-    assert_equal @set.find {|r| r.is_a? X11Dependency}, X11Dependency.new('2.6')
+    assert_equal @set.find {|r| r.is_a? X11Dependency}, X11Dependency.new('x11', '2.6')
   end
 end