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-rw-r--r--lib/rubygems/dependency_resolver/composed_set.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/rubygems/dependency_resolver/composed_set.rb b/lib/rubygems/dependency_resolver/composed_set.rb
index fb38128bb0..aeecf047b8 100644
--- a/lib/rubygems/dependency_resolver/composed_set.rb
+++ b/lib/rubygems/dependency_resolver/composed_set.rb
@@ -1,4 +1,6 @@
-class Gem::DependencyResolver::ComposedSet
+class Gem::DependencyResolver::ComposedSet < Gem::DependencyResolver::Set
+
+ attr_reader :sets # :nodoc:
def initialize *sets
@sets = sets