;; !defstruct-with-alternate-metaclass is unslammable and the
;; RECOMPILE restart doesn't work on it. This is the main reason why
;; this stuff is split out into its own file. Also, it lets the
;; !defstruct-with-alternate-metaclass is unslammable and the
;; RECOMPILE restart doesn't work on it. This is the main reason why
;; this stuff is split out into its own file. Also, it lets the