gistfile1.txt

def self.factory(plugin, &block)
  candidates = self.plugin_paths.map do |path|
    Dir["#{path}/#{plugin.to_s.downcase}.rb"][0]
  end
  candidate = candidates.detect(&:any?)
  if candidate
    require candidate
    Plugin.const_get(plugin.to_s.capitalize.to_sym).new(&block)
  else
    raise YourSystem::PluginNotFound, "The #{plugin} plugin could not be loaded"
  end
end