Unfortunately, I have hot two snags in the last 20-odd minutes.
Snag primo: It doesn't work to simply asdf-install:install the package. It
relies on the *load-pathname* of the .asd file being the same as the file
residing in the source directory (simple fix, wrap it in a truename call to
resolve symlinks).
Snag secundo: There's a peppering of calls to USOCKET:MAKE-DATAGRAM-SOCKET and
that is a call that my latest USocket version has No Seen<tm> (0.3.7, freshly
asdf-installed, specially).
That's as far as I've managed to make it.
//Ingvar