[SpecSet] Use a set for #for

1 files changed, 3 insertions, 4 deletions

diff --git a/lib/bundler/spec_set.rb b/lib/bundler/spec_set.rb
index bd962922ea..5fd6bd606f 100644
--- a/lib/bundler/spec_set.rb
+++ b/lib/bundler/spec_set.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 require "tsort"
 require "forwardable"
+require "set"
 
 module Bundler
   class SpecSet
@@ -15,16 +16,14 @@ module Bundler
     end
 
     def for(dependencies, skip = [], check = false, match_current_platform = false, raise_on_missing = true)
-      handled = {}
+      handled = Set.new
       deps = dependencies.dup
       specs = []
       skip += ["bundler"]
 
       loop do
         break unless dep = deps.shift
-        next if handled[dep] || skip.include?(dep.name)
-
-        handled[dep] = true
+        next if !handled.add?(dep) || skip.include?(dep.name)
 
         if spec = spec_for_dependency(dep, match_current_platform)
           specs << spec