# File lib/merb-core/core_ext/kernel.rb, line 246
  def use_orm(orm, &blk)
    begin
      Merb.orm = orm
      orm_plugin = "merb_#{orm}"
      Kernel.dependency(orm_plugin, &blk)
    rescue LoadError => e
      Merb.logger.warn!("The #{orm_plugin} gem was not found.  You may need to install it.")
      raise e
    end
    nil
  end