Subject: Re: bug#76315: System does not boot after switching to system-log service

From: Tomas Volf <[email-masked]>
Date: Sun, 16 Feb 2025 15:23:12 +0100

I have put together a reproducer in a VM:

1. Install Guix system using 1.4.0 installer
  --> Include sshd, openbox

2. Reboot
3. Copy the /run/current-system/configuration.scm out of the VM
4. Adjust the configuration.scm (full file attached)
4.1 Allow NOPASSWD sudo
  (sudoers-file
   (plain-file "sudoers"
               (string-append (plain-file-content %sudoers-specification)
                              (format #f "x ALL = NOPASSWD: ALL~%"))))
4.2 Use %base-services, delete set-xorg-configuration service
4.3 Add dhcp-client-service-type service.
4.4 Authorize your key
  (simple-service
   'extra-authorized-keys guix-service-type
   (guix-extension
    (authorized-keys (list
                      (local-file "/etc/guix/signing-key.pub")))))

5. Manually tweak /etc/sudoers to support NOPASSWD for user x
6. Create machine configuration (full file attached)

7. Guix deploy the machine using b99df83c591104655a6b387817d8f7bb3c50204c
8. Reboot

9. Guix deploy the machine using 1afbf48b250f667ce45de40a6c275e3e42ade67c
  --> See the following error:
  
--8<---------------cut here---------------start------------->8---
building path(s) `/gnu/store/zdknxv3knkkxx52nwfbz120p32z4j2aa-upgrade-shepherd-services.scm'
building path(s) `/gnu/store/x7bzglpc0vvr5ak24k3i33ikq5ph8sfx-remote-exp.scm'
guix deploy: warning: an error occurred while upgrading services on 'localhost':
%exception #<inferior-object #<&service-not-found-error service: system-log>> 
--8<---------------cut here---------------end--------------->8---

A. Reboot
  --> The system does not come up (I gave it ~10 minutes).

;; This is an operating system configuration generated
;; by the graphical installer.
;;
;; Once installation is complete, you can learn and modify
;; this file to tweak the system configuration, and pass it
;; to the 'guix system reconfigure' command to effect your
;; changes.

;; Indicate which modules to import to access the variables
;; used in this configuration.
(use-modules (gnu))
(use-service-modules cups desktop networking ssh xorg)

(operating-system
  (locale "en_US.utf8")
  (timezone "Europe/Prague")
  (keyboard-layout (keyboard-layout "us"))
  (host-name "x")

  ;; The list of user accounts ('root' is implicit).
  (users (cons* (user-account
                 (name "x")
                 (comment "X")
                 (group "users")
                 (home-directory "/home/x")
                 (supplementary-groups '("wheel" "netdev" "audio" "video")))
                %base-user-accounts))

  ;; Packages installed system-wide.  Users can also install packages
  ;; under their own account: use 'guix search KEYWORD' to search
  ;; for packages and 'guix install PACKAGE' to install a package.
  (packages (append (list (specification->package "openbox")
                          (specification->package "nss-certs"))
                    %base-packages))

  (sudoers-file
   (plain-file "sudoers"
               (string-append (plain-file-content %sudoers-specification)
                              (format #f "x ALL = NOPASSWD: ALL~%"))))

  ;; Below is the list of system services.  To search for available
  ;; services, run 'guix system search KEYWORD' in a terminal.
  (services
   (append (list
            (service dhcp-client-service-type)
            ;; To configure OpenSSH, pass an 'openssh-configuration'
            ;; record as a second argument to 'service' below.
            (service openssh-service-type)

            (simple-service
             'extra-authorized-keys guix-service-type
             (guix-extension
              (authorized-keys (list
                                (local-file "/etc/guix/signing-key.pub"))))))

           ;; This is the default list of services we
           ;; are appending to.
           %base-services))
  (bootloader (bootloader-configuration
               (bootloader grub-efi-bootloader)
               (targets (list "/boot/efi"))
               (keyboard-layout keyboard-layout)))
  (swap-devices (list (swap-space
                        (target (uuid
                                 "aa8dee07-5bf4-4ad2-8db7-8ee6139d6fc5")))))

  ;; The list of file systems that get "mounted".  The unique
  ;; file system identifiers there ("UUIDs") can be obtained
  ;; by running 'blkid' in a terminal.
  (file-systems (cons* (file-system
                         (mount-point "/boot/efi")
                         (device (uuid "79EB-4D57"
                                       'fat32))
                         (type "vfat"))
                       (file-system
                         (mount-point "/")
                         (device (uuid
                                  "11d0a98d-7200-4a9b-ae0a-0cb4db3e808d"
                                  'ext4))
                         (type "ext4")) %base-file-systems)))
(use-modules (gnu))

(use-service-modules networking ssh)
(use-package-modules bootloaders)

(list (machine
       (operating-system (primitive-load "config.scm"))
       (environment managed-host-environment-type)
       (configuration (machine-ssh-configuration
                       (build-locally? #f)
                       (host-name "localhost")
                       (system "x86_64-linux")
                       (user "x")
                       (port 8888)))))