clean_after_install?

# File lib/bundler/cli/common.rb, line 94
    def self.clean_after_install?
      clean = Bundler.settings[:clean]
      return clean unless clean.nil?
      clean ||= Bundler.feature_flag.auto_clean_without_path? && Bundler.settings[:path].nil?
      clean &&= !Bundler.use_system_gems?
      clean
    end