chain.rb in build-dependency-1.4.0

- old
+ new

@@ -18,10 +18,12 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
 require_relative 'resolver'
 
+require 'set'
+
 module Build
 	module Dependency
 		class Chain < Resolver
 			# An `UnresolvedDependencyError` will be thrown if there are any unresolved dependencies.
 			def self.expand(*args)
@@ -38,10 +40,10 @@
 			
 			def initialize(dependencies, providers, selection = [])
 				super()
 				
 				# Explicitly selected dependencies which will be used when resolving ambiguity:
-				@selection = Set.new(selection)
+				@selection = ::Set.new(selection)
 				
 				# The list of dependencies that needs to be satisfied:
 				@dependencies = dependencies.collect{|dependency| Depends[dependency]}
 				
 				# The available providers which match up to required dependencies: