services: cuirass: Add ‘minimum-disk-space’ field.

* gnu/services/cuirass.scm (<cuirass-remote-worker-configuration>)
[minimum-disk-space]: New field.
(cuirass-remote-worker-shepherd-service): Honor it.
* doc/guix.texi (Continuous Integration): Document it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Merges: #10691

2 files changed, 10 insertions, 1 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index e1701a0d17d..f13c6ed970f 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -40452,6 +40452,10 @@ address instead.
 @item @code{systems} (default: @code{(list (%current-system))})
 Only request builds for the given @var{systems}.
 
+@item @code{minimum-disk-space} (default: @code{5})
+Minimum disk space (in GiB) that must be available in the store and in
+@file{/tmp} before starting a build.
+
 @item @code{log-file} (default: @code{"/var/log/cuirass-remote-worker.log"})
 Location of the log file.
 
diff --git a/gnu/services/cuirass.scm b/gnu/services/cuirass.scm
index 8e3b01e514e..b594fe78d7a 100644
--- a/gnu/services/cuirass.scm
+++ b/gnu/services/cuirass.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
-;;; Copyright © 2016-2025 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016-2026 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2017 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
@@ -432,6 +432,8 @@
                     (default #f))
   (systems          cuirass-remote-worker-systems ;list
                     (default (list (%current-system))))
+  (minimum-disk-space cuirass-remote-worker-minimum-disk-space
+                      (default 5))
   (log-file         cuirass-remote-worker-log-file ;string
                     (default "/var/log/cuirass-remote-worker.log"))
   (publish-port     cuirass-remote-worker-configuration-publish-port ;int
@@ -461,6 +463,7 @@
 CONFIG."
   (match-record config <cuirass-remote-worker-configuration>
     (cuirass workers server systems log-file publish-port
+             minimum-disk-space
              substitute-urls public-key private-key)
     (list (shepherd-service
            (documentation "Run Cuirass remote build worker.")
@@ -472,6 +475,8 @@ CONFIG."
                            "--user=cuirass-worker" ;drop privileges early on
                            (string-append "--workers="
                                           #$(number->string workers))
+                           (string-append "--minimum-disk-space="
+                                          #$(number->string minimum-disk-space))
                            #$@(if server
                                   (list (string-append "--server=" server))
                                   '())