let PluginMeta =
	  { name :
		  Text
	  , author :
		  Text
	  , email :
		  Optional Text
	  , homepage :
		  Optional Text
	  , upstream :
		  Optional Text
	  , description :
		  Text
	  , usage :
		  Text
	  , apiVersion :
		  Natural
	  }

in  PluginMeta