I have a library that provides `DEF-UNIMPLEMENTED` as a macro for
defining stub functions. When you compile a file with unimplemented
functions, you get a warning of the type `FOO:UNIMPLEMENTED-STUB` in my
library `FOO`.
I'd like to put in an asdf system definition a file spec something like
this:
```
(:file "file-with-stubs"
:method (:around (o c)
(handler-bind
((foo:unimplemented-stub
#'(lambda (c)
(print c)
(muffle-warning c))
(call-next-method)))
```
but, of course, the package `foo` doesn't exist when this is read
(although I could put `(asdf:load-system "foo")` upstream of the
enclosing defsystem).
This isn't a case that's nicely consistent with Faré's hack for
translating strings or keyword symbols, nor does it seem easy to use
`find-symbol` for this purpose.
Thoughts?
thanks,
r
