class Bundler::Resolver

def handle_conflict(current, states, existing=nil)
  until current.nil?
    current_state = find_state(current, states)
    return current if state_any?(current_state)
    current = current.required_by.last if current
  end
  until existing.nil?
    existing_state = find_state(existing, states)
    return existing if state_any?(existing_state)
    existing = existing.required_by.last if existing
  end
end