services: cuirass: Add load-path to cuirass configuration

* gnu/services/cuirass.scm (<cuirass-configuration>): Add load-path field.
(cuirass-shepherd-service): Honor it.
* doc/guix.texi (Continuous Integration): Document it.

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

2 files changed, 12 insertions, 3 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 47456f3cd1..6acde6621b 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -13146,6 +13146,10 @@ from source.
 @item @code{one-shot?} (default: @code{#f})
 Only evaluate specifications and build derivations once.
 
+@item @code{load-path} (default: @code{'()})
+This allows users to define their own packages and make them visible to
+cuirass as in @command{guix build} command.
+
 @item @code{cuirass} (default: @code{cuirass})
 The Cuirass package to use.
 @end table
diff --git a/gnu/services/cuirass.scm b/gnu/services/cuirass.scm
index 1194133f63..237f71a09b 100644
--- a/gnu/services/cuirass.scm
+++ b/gnu/services/cuirass.scm
@@ -64,7 +64,9 @@
   (use-substitutes? cuirass-configuration-use-substitutes? ;boolean
                     (default #f))
   (one-shot?        cuirass-configuration-one-shot? ;boolean
-                    (default #f)))
+                    (default #f))
+  (load-path        cuirass-configuration-load-path
+                    (default '())))
 
 (define (cuirass-shepherd-service config)
   "Return a <shepherd-service> for the Cuirass service with CONFIG."
@@ -80,7 +82,8 @@
          (port             (cuirass-configuration-port config))
          (specs            (cuirass-configuration-specifications config))
          (use-substitutes? (cuirass-configuration-use-substitutes? config))
-         (one-shot?        (cuirass-configuration-one-shot? config)))
+         (one-shot?        (cuirass-configuration-one-shot? config))
+         (load-path        (cuirass-configuration-load-path config)))
      (list (shepherd-service
             (documentation "Run Cuirass.")
             (provision '(cuirass))
@@ -94,7 +97,9 @@
                             "--port" #$(number->string port)
                             "--interval" #$(number->string interval)
                             #$@(if use-substitutes? '("--use-substitutes") '())
-                            #$@(if one-shot? '("--one-shot") '()))
+                            #$@(if one-shot? '("--one-shot") '())
+                            #$@(if (null? load-path) '()
+                                 `("--load-path" ,(string-join load-path ":"))))
                       #:user #$user
                       #:group #$group
                       #:log-file #$log-file))