Gem::Commands::CleanupCommand#clean_gems

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/commands/cleanup_command.rb, line 95
def clean_gems
  get_primary_gems
  get_candidate_gems
  get_gems_to_cleanup

  @full = Gem::DependencyList.from_specs

  deplist = Gem::DependencyList.new
  @gems_to_cleanup.each {|spec| deplist.add spec }

  deps = deplist.strongly_connected_components.flatten

  deps.reverse_each do |spec|
    uninstall_dep spec
  end
end