Inscrutable error when using “guix deploy”

[Ricardo Wurmus <rekado@elephly.net>]

Hi,

I’m using this deployment file:

--8<---------------cut here---------------start------------->8---
(use-modules (sysadmin build-machines)
             (sysadmin people))

(define %ids (list 25))
(define (system-for id)
  (berlin-build-machine-os id))
(define (id->ip id)
  (format #f "141.80.167.~d" (+ 131 id)))
(map (lambda (id)
      (machine
       (operating-system (system-for id))
       (environment managed-host-environment-type)
       (configuration (machine-ssh-configuration
                       (system "x86_64-linux")
                       (host-name (id->ip id))
                       (identity "./id_rsa")
                       (port 22)))))
     %ids)
--8<---------------cut here---------------end--------------->8---

And get an error that I don’t understand:

--8<---------------cut here---------------start------------->8---
root@berlin ~/maintenance/hydra# ~/.config/guix/current/bin/guix deploy -L modules deploy-berlin-node.scm
guix deploy: deploying to hydra-guix-25...
ERROR: In procedure read:
In procedure scm_lreadr: #<unknown port>:11:103: Unknown # object: #\<
--8<---------------cut here---------------end--------------->8---

Any ideas?  Am I doing something wrong?

-- 
Ricardo