services: unattended-upgrade: Add 'operating-system-expression' field.

* gnu/services/admin.scm (<unattended-upgrade-configuration>)
[operating-system-expression]: New field.
(unattended-upgrade-mcron-jobs): Honor it.
* doc/guix.texi (Unattended Upgrades): Document it.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Giacomo Leidi 2023-01-02 18:05:24 +01:00 committed by Ludovic Courtès
parent 22e9b01bda
commit 5f63811032
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2 changed files with 29 additions and 5 deletions

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@ -22,7 +22,7 @@
@set SUBSTITUTE-URLS https://@value{SUBSTITUTE-SERVER-1} https://@value{SUBSTITUTE-SERVER-2}
@copying
Copyright @copyright{} 2012-2022 Ludovic Courtès@*
Copyright @copyright{} 2012-2023 Ludovic Courtès@*
Copyright @copyright{} 2013, 2014, 2016 Andreas Enge@*
Copyright @copyright{} 2013 Nikita Karetnikov@*
Copyright @copyright{} 2014, 2015, 2016 Alex Kost@*
@ -110,6 +110,7 @@ Copyright @copyright{} 2022 Simon Streit@*
Copyright @copyright{} 2022 (@*
Copyright @copyright{} 2022 John Kehayias@*
Copyright @copyright{} 2022 Ivan Vilata-i-Balaguer@*
Copyright @copyright{} 2023 Giacomo Leidi@*
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
@ -21362,6 +21363,17 @@ Therefore, uses of @code{local-file} within @file{config.scm} will work
as expected. @xref{G-Expressions}, for information about
@code{local-file} and @code{file-append}.
@item @code{operating-system-expression} (default: @code{#f})
This field specifies an expression that evaluates to the operating
system to use for the upgrade. If no value is provided the
@code{operating-system-file} field value is used.
@lisp
(unattended-upgrade-configuration
(operating-system-expression
#~(@@ (guix system install) installation-os)))
@end lisp
@item @code{services-to-restart} (default: @code{'(mcron)})
This field specifies the Shepherd services to restart when the upgrade
completes.

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@ -1,7 +1,8 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2016-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016-2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
;;; Copyright © 2023 Giacomo Leidi <goodoldpaul@autistici.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -58,6 +59,7 @@
unattended-upgrade-configuration
unattended-upgrade-configuration?
unattended-upgrade-configuration-operating-system-file
unattended-upgrade-configuration-operating-system-expression
unattended-upgrade-configuration-channels
unattended-upgrade-configuration-schedule
unattended-upgrade-configuration-services-to-restart
@ -263,6 +265,8 @@ Old log files are removed or compressed according to the configuration.")
unattended-upgrade-configuration?
(operating-system-file unattended-upgrade-operating-system-file
(default "/run/current-system/configuration.scm"))
(operating-system-expression unattended-upgrade-operating-system-expression
(default #f))
(schedule unattended-upgrade-configuration-schedule
(default "30 01 * * 0"))
(channels unattended-upgrade-configuration-channels
@ -296,6 +300,14 @@ Old log files are removed or compressed according to the configuration.")
(define config-file
(unattended-upgrade-operating-system-file config))
(define expression
(unattended-upgrade-operating-system-expression config))
(define arguments
(if expression
#~(list "-e" (object->string '#$expression))
#~(list #$config-file)))
(define code
(with-imported-modules (source-module-closure '((guix build utils)
(gnu services herd)))
@ -333,9 +345,9 @@ Old log files are removed or compressed according to the configuration.")
(format #t "~a starting upgrade...~%" (timestamp))
(guard (c ((invoke-error? c)
(report-invoke-error c)))
(invoke #$(file-append guix "/bin/guix")
"time-machine" "-C" #$channels
"--" "system" "reconfigure" #$config-file)
(apply invoke #$(file-append guix "/bin/guix")
"time-machine" "-C" #$channels
"--" "system" "reconfigure" #$arguments)
;; 'guix system delete-generations' fails when there's no
;; matching generation. Thus, catch 'invoke-error?'.