Failing to use guile-bash

[David Larsson]

Hi,
I installed the guile-bash package and tried to use it as below but 
can't get it to work. Anyone who is successfully using it?

So far, I have done:
guix package -i guile-bash
enable -f ~/.guix-profile/lib/bash/libguile-bash.so scm

then created the file example.scm with the following content.
(use-modules (gnu bash))
(define-bash-function (dtach-start-emacs)
   (unless (file-exists? "/tmp/emacs.dtach")
     #$ [dtach -n /tmp/emacs.dtach emacs]))

and then ran: scm example.scm

which gave the following error message:
;;; compiling /home/user1/src/code_guile/example.scm
;;; WARNING: compilation of /home/user1/src/code_guile/example.scm failed:
;;; ERROR: In procedure scm_lreadr: example.scm:18:8: Unknown # object: 
#\$
ERROR: In procedure scm_lreadr: 
/home/user1/src/code_guile/example.scm:18:8: Unknown # object: #\

Not sure what's missing. All suggestions appreciated.

--
Regards
David Larsson