Trying the latest patches on todays cvs version of sbcl, 1.0.27.9, totally breaks the testcases. Whereas the old version works. So be a bit careful to use the darcs version for a while in a stable environment.
Otherwise, It seems there are lots of cool new features, and the documentation is great. I've put it online here: http://common-lisp.net/project/cl-json/cl-json.html
Boris, one thing I am not sure about, the security implications of the clos decoder. How do you make sure that an evil user doesn't create a lispClass ticking-bomb in the lispPackage not-so-secret? Or do I read the docs to bad?
Regards, Henrik