Hello, I've found a small dependency miss when trying cl-perec (really impressive stuff), swank is needed by computed class. But you usually don't see it when you run from slime, I found out when I loaded a system from the command-line sbcl interface.
Best wishes, Henrik Hjelte
{ hunk ./computed-class.asd 64 - :depends-on (:arnesi :closer-mop) + :depends-on (:arnesi :closer-mop :swank) }