The EpubCheck plugin requires Java. As much I use the plugin and think it's worthy of being built-in, I'm not sure having a potentially non-functional plugin distributed with Sigil (and the ensuing support it might take to help a new user get it up and running) is the best idea.
Ideally, I think good built-in plugin candidates should have no external requirements. And they need to be compatible with the three main platforms Sigil supports.
|