fps@cherry 09:25:13 ~ $ sudo guix system reconfigure /config.scm
Password:
substitute: updating list of substitutes from 'http://hydra.gnu.org'... 100.0%
The following derivation will be built:
   /gnu/store/l1rsagnk0gvbhhj3jwrc8s4wql13b7fr-grub.cfg.drv
/gnu/store/cj30zcz7zcr9mnvmjr9nczrl7973gwxg-system
/gnu/store/d5wgn07wmyzhp5as4k8prbji0h93pq31-grub.cfg
/gnu/store/a2apzsqx903y4damjrq7lrxciimx7lmm-grub-2.02beta3
activating system...
setting up setuid programs in '/run/setuid-programs'...
populating /etc from /gnu/store/vhvrm7c3n8fdm3s8p0k0x8c4kx5wg93w-etc...
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
usermod: no changes
making '/gnu/store/cj30zcz7zcr9mnvmjr9nczrl7973gwxg-system' the current system...
guix system: warning: while talking to shepherd: No such file or directory
Backtrace:
In ice-9/boot-9.scm:
 157: 15 [catch #t #<catch-closure 249cba0> ...]
In unknown file:
   ?: 14 [apply-smob/1 #<catch-closure 249cba0>]
In ice-9/boot-9.scm:
  63: 13 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 432: 12 [eval # #]
In ice-9/boot-9.scm:
2401: 11 [save-module-excursion #<procedure 24b9940 at ice-9/boot-9.scm:4045:3 ()>]
4050: 10 [#<procedure 24b9940 at ice-9/boot-9.scm:4045:3 ()>]
1724: 9 [%start-stack load-stack ...]
1729: 8 [#<procedure 24d0ea0 ()>]
In unknown file:
   ?: 7 [primitive-load "/gnu/store/vvm6hgwwiwjvs2mw15fh30zyhfjkxv96-guix-0.11.0-1.4420/bin/.guix-r
In guix/ui.scm:
1192: 6 [run-guix-command system "reconfigure" "/config.scm"]
In ice-9/boot-9.scm:
 157: 5 [catch srfi-34 #<procedure 5234de0 at guix/ui.scm:423:2 ()> ...]
 157: 4 [catch system-error ...]
In guix/scripts/system.scm:
 875: 3 [#<procedure 5208090 at guix/scripts/system.scm:867:2 ()>]
 781: 2 [process-action reconfigure ("/config.scm") ...]
In guix/store.scm:
1182: 1 [run-with-store # ...]
In guix/scripts/system.scm:
 599: 0 [#<procedure 9af9480 at guix/scripts/system.scm:599:13 (state)> #]

guix/scripts/system.scm:599:13: In procedure #<procedure 9af9480 at guix/scripts/system.scm:599:13
guix/scripts/system.scm:599:13: Throw to key `vm-error' with args `(vm-run "Too few values returned