bug#59200: reproducibility

[ykonai]

Hi,

I can definitely consistently reproduce this issue. Maybe something in
your filesystem could interfere with this? Try:
guix shell sbcl sbcl-uuid --container -- sbcl --eval '(require :asdf)'
--eval '(asdf:load-system :uuid)'

This is on guix commit 8f9588185d74f1f251b041b84d43302c337588ff, which
is from a fresh guix pull.

I was wrong wrt. .fasl files missing: ls -l $(guix build
sbcl-uuid)/lib/common-lisp/sbcl/uuid/ does show that the FASL is there,
it is simply that SBCL arbitrarily decides it needs to be recompiled,
which looks like the problem here. It could be some ASDF upstream bug.