Hmm... I'm experiencing a similar issue on 83870c3.

--8<---------------cut here---------------start------------->8---
$ guix show sbcl-alexandria
Backtrace:
In ice-9/boot-9.scm:
   222:29 19 (map1 (((gnu packages gettext)) ((gnu packages ghostscript)) ((gnu packages gl)) ((gnu packages glib)) ((gnu packages gnome)) ((gnu packages gnupg)) ((gnu packages #)) (#) …))
   222:29 18 (map1 (((gnu packages ghostscript)) ((gnu packages gl)) ((gnu packages glib)) ((gnu packages gnome)) ((gnu packages gnupg)) ((gnu packages gstreamer)) ((gnu packages gtk)) …))
   222:29 17 (map1 (((gnu packages gl)) ((gnu packages glib)) ((gnu packages gnome)) ((gnu packages gnupg)) ((gnu packages gstreamer)) ((gnu packages gtk)) ((gnu packages image)) ((…)) …))
   222:29 16 (map1 (((gnu packages glib)) ((gnu packages gnome)) ((gnu packages gnupg)) ((gnu packages gstreamer)) ((gnu packages gtk)) ((gnu packages image)) ((gnu packages #)) ((# …)) …))
   222:29 15 (map1 (((gnu packages gnome)) ((gnu packages gnupg)) ((gnu packages gstreamer)) ((gnu packages gtk)) ((gnu packages image)) ((gnu packages imagemagick)) ((gnu packages #)) …))
   222:29 14 (map1 (((gnu packages gnupg)) ((gnu packages gstreamer)) ((gnu packages gtk)) ((gnu packages image)) ((gnu packages imagemagick)) ((gnu packages javascript)) ((gnu # #)) # …))
   222:29 13 (map1 (((gnu packages gstreamer)) ((gnu packages gtk)) ((gnu packages image)) ((gnu packages imagemagick)) ((gnu packages javascript)) ((gnu packages lesstif)) ((gnu # #)) …))
   222:29 12 (map1 (((gnu packages gtk)) ((gnu packages image)) ((gnu packages imagemagick)) ((gnu packages javascript)) ((gnu packages lesstif)) ((gnu packages libffi)) ((gnu # #)) (#) …))
   222:29 11 (map1 (((gnu packages image)) ((gnu packages imagemagick)) ((gnu packages javascript)) ((gnu packages lesstif)) ((gnu packages libffi)) ((gnu packages linux)) ((gnu # #)) # …))
   222:29 10 (map1 (((gnu packages imagemagick)) ((gnu packages javascript)) ((gnu packages lesstif)) ((gnu packages libffi)) ((gnu packages linux)) ((gnu packages lua)) ((gnu # pcre)) …))
   222:17  9 (map1 (((gnu packages javascript)) ((gnu packages lesstif)) ((gnu packages libffi)) ((gnu packages linux)) ((gnu packages lua)) ((gnu packages pcre)) ((gnu packages perl)) …))
  2800:17  8 (resolve-interface (gnu packages javascript) #:select _ #:hide _ #:prefix _ #:renamer _ #:version _)
In ice-9/threads.scm:
    390:8  7 (_ _)
In ice-9/boot-9.scm:
  2726:13  6 (_)
In ice-9/threads.scm:
    390:8  5 (_ _)
In ice-9/boot-9.scm:
  2994:20  4 (_)
   2312:4  3 (save-module-excursion #<procedure 7f3213a53d50 at ice-9/boot-9.scm:2995:21 ()>)
  3014:26  2 (_)
In unknown file:
           1 (primitive-load-path "gnu/packages/javascript" #<procedure 7f3211eb0a80 at ice-9/boot-9.scm:3001:37 ()>)
In gnu/packages/javascript.scm:
   460:10  0 (_)

gnu/packages/javascript.scm:460:10: error: sbcl-cl-uglify-js: unbound variable
--8<---------------cut here---------------end--------------->8---

I'm investigating.  Any clue what's going on?

-- 
Pierre Neidhardt
https://ambrevar.xyz/