Quoting Nathan Bird (nathan@acceleration.net):
Not sure why this just came up and I (or anyone else) didn't run across this sooner.
Partly because it's a brand new file, I guess.
The dependency still exists between runes/ystream.lisp and runes/syntax.lisp so I think this is still good to state explicitly in the asd rather than getting lucky on the order it loads.
I'm lazy, so I've simply put a :serial t into that system for now. Declaring dependencies manually is not too good an idea anyway in my experience; that's something that "should" be autogenerated from xref info. Lacking a tool to do that, :serial seems the most robust solution.
Thanks, David