Could you elaborate on "not processable by established compiler technology"? The module spec grammar looks like a conventional programming language grammar and javac can apparently process it just fine. Is this an odd way of saying "it doesn't look like Java therefore it can't be integrated with a Java compiler"?

edit: seems there's something about it here:http://mail.openjdk.java.net/pipermail/jigsaw-dev/2017-May/0...