While we are rebuilding the Lisp world, I suggest we remove Coreutils
from the SBCL closure since it's only needed on LispWorks and on
non-Linux:

--8<---------------cut here---------------start------------->8---
(add-after 'install 'remove-coreutils-references
           ;; They are only useful on non-Linux, non-SBCL.
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (share-dir (string-append out "/share/sbcl/")))
               (substitute* (string-append share-dir "src/code/run-program.lisp")
                 (("\\(run-program \".*uname\"")
                  "(run-program \"uname\""))
               (substitute* (string-append share-dir "contrib/asdf/asdf.lisp")
                 (("\\(\".*/usr/bin/env\"")
                  "(\"/usr/bin/env\""))
               (substitute* (string-append share-dir "contrib/asdf/uiop.lisp")
                 (("\\(\".*/usr/bin/env\"")
                  "(\"/usr/bin/env\""))

               #t)))
--8<---------------cut here---------------end--------------->8---