The full backtrace reads as: --8<---------------cut here---------------start------------->8--- $ ./pre-inst-env guix system vm-image gnu/system/examples/desktop.tmpl --image-size=5G Backtrace: 19 (apply-smob/0 #<thunk 7fbaa93afc00>) In ice-9/boot-9.scm: 718:2 18 (call-with-prompt _ _ #<procedure default-prompt-handler (k proc)>) In ice-9/eval.scm: 619:8 17 (_ #(#(#<directory (guile-user) 7fbaa905cf00>))) In guix/ui.scm: 2116:12 16 (run-guix-command _ . _) In ice-9/boot-9.scm: 1736:10 15 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _) 1731:15 14 (with-exception-handler #<procedure 7fba9d0fb420 at ice-9/boot-9.scm:1815:7 (exn)> _ #:unwind? _ #:unwind-for-type _) In guix/scripts/system.scm: 1342:8 13 (_) In guix/status.scm: 776:4 12 (call-with-status-report _ _) In guix/scripts/system.scm: 1175:4 11 (_) In ice-9/boot-9.scm: 1736:10 10 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _) In guix/store.scm: 631:37 9 (thunk) 1300:8 8 (call-with-build-handler #<procedure 7fba9aa6ac90 at guix/ui.scm:1167:2 (continue store things mode)> _) 2042:24 7 (run-with-store #<store-connection 256.99 7fba9a493c30> _ #:guile-for-build _ #:system _ #:target _) In guix/scripts/system.scm: 814:2 6 (_ _) 689:7 5 (_ #<store-connection 256.99 7fba9a493c30>) In gnu/system/vm.scm: 637:2 4 (system-qemu-image #<<operating-system> kernel: #<package linux-libre@5.9.3 gnu/packages/linux.scm:723 7fba9e649820> kernel-loadable-modules: () kernel-arguments: ("modprobe.blacklist=usbmouse,u…> …) In unknown file: 3 (remove #<procedure 7fba9ca0fa00 at gnu/system/vm.scm:640:12 (fs)> (#<<file-system> device: #<file-system-label "my-root"> mount-point: "/" type: "ext4" flags: () options: #f mount?: #t mount-…> …)) 2 (string-prefix? "/dev/" #<<uuid> type: fat bv: #vu8(205 171 52 18)> #<undefined> #<undefined> #<undefined> #<undefined>) In ice-9/boot-9.scm: 1669:16 1 (raise-exception _ #:continuable? _) 1669:16 0 (raise-exception _ #:continuable? _)
ice-9/boot-9.scm:1669:16: In procedure raise-exception: In procedure string-prefix?: Wrong type argument in position 2 (expecting string): #<<uuid> type: fat bv: #vu8(205 171 52 18)> --8<---------------cut here---------------end--------------->8--- Thanks, Maxim