Failed to start service 'device-mapping

[Kete Foy <kete@ninthfloor.org>]

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I checked my config.scm (attached), but I don't see any missing parens
or any discrepancy from Ludo's example
<https://lists.gnu.org/archive/html/guix-devel/2016-04/msg00964.html>. I
also based the rest on rain1's github wiki:
https://gitlab.com/rain1/guix-wiki/wikis/encrypted-home-config.scm.

I booted the computer, and Grub loaded the kernel. Then, the device
mapper failed to start, and apparently, every service afterward also
failed to start: user-processes, guix-daemon, term-tty6, dbus-system,
xorg-server, etc. I'm trying to run with an encrypted partition mounted
at /home.

Do I need to correct my config.scm and run the herd and guix system init
commands again?
-- 
https://emailselfdefense.fsf.org
gpg --recv-key 0xD7E954319C95097FC314C2A2DD8C15BD01685E3A

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;; This is an operating system configuration template
;; for a "desktop" setup with GNOME and Xfce.

(use-modules (gnu) (gnu system nss))
(use-service-modules desktop)
(use-package-modules certs)

(operating-system
  (host-name "kantelope")
  (timezone "America/New_York")
  (locale "en_US.UTF-8")

  ;; Assuming /dev/sdX is the target hard disk, and "my-root"
  ;; is the label of the target root file system.
  (bootloader (grub-configuration (device "/dev/sda")))
  (mapped-devices (list (mapped-device
                         (source (uuid "ea0f857c-038b-4dda-b81f-39ad76210cfa"))
                         (target "crypthome")
                         (type luks-device-mapping))))

  (file-systems (cons* (file-system
                         (device "rootfs")
                         (title 'label)
                         (mount-point "/")
                         (type "ext4"))
                       (file-system
                         (device "/dev/mapper/crypthome")
                         (mount-point "/home")
                         (type "ext4"))
                      %base-file-systems))

  (users (cons (user-account
                (name "kete")
                (comment "")
                (group "users")
                (supplementary-groups '("wheel" "netdev"
                                        "audio" "video"))
                (home-directory "/home/kete"))
               %base-user-accounts))

  ;; This is where we specify system-wide packages.
  (packages (cons* nss-certs         ;for HTTPS access
                   %base-packages))

  ;; Add GNOME and/or Xfce---we can choose at the log-in
  ;; screen with F1.  Use the "desktop" services, which
  ;; include the X11 log-in service, networking with Wicd,
  ;; and more.
  (services (cons* (gnome-desktop-service)
                   (xfce-desktop-service)
                   %desktop-services))

  ;; Allow resolution of '.local' host names with mDNS.
  (name-service-switch %mdns-host-lookup-nss))

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