linux-initrd: Factorize 'check-device-initrd-modules'.

* gnu/system/mapped-devices.scm (check-device-initrd-modules): Move to...
* gnu/system/linux-initrd.scm (check-device-initrd-modules): ... here.
New procedure.
* po/guix/POTFILES.in: Add it.
* guix/scripts/system.scm (check-initrd-modules)[check-device]: Remove.
Use 'check-device-initrd-modules' instead.

gnu/system/linux-initrd.scm

@@ -24,6 +24,7 @@
   #:use-module (guix store)
   #:use-module (guix gexp)
   #:use-module (guix utils)
+  #:use-module (guix i18n)
   #:use-module ((guix store)
                 #:select (%store-prefix))
   #:use-module ((guix derivations)
@@ -37,16 +38,22 @@
                 #:select (%guile-static-stripped))
   #:use-module (gnu system file-systems)
   #:use-module (gnu system mapped-devices)
+  #:autoload   (gnu build linux-modules)
+                 (device-module-aliases matching-modules)
   #:use-module (ice-9 match)
   #:use-module (ice-9 regex)
   #:use-module (ice-9 vlist)
+  #:use-module (ice-9 format)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-26)
+  #:use-module (srfi srfi-34)
+  #:use-module (srfi srfi-35)
   #:export (expression->initrd
             %base-initrd-modules
             raw-initrd
             file-system-packages
-            base-initrd))
+            base-initrd
+            check-device-initrd-modules))
 
 
 ;;; Commentary:
@@ -343,4 +350,19 @@ loaded at boot time in the order in which they appear."
               #:volatile-root? volatile-root?
               #:on-error on-error))
 
+(define (check-device-initrd-modules device linux-modules location)
+  "Raise an error if DEVICE needs modules beyond LINUX-MODULES to operate.
+DEVICE must be a \"/dev\" file name."
+  (let ((modules (delete-duplicates
+                  (append-map matching-modules
+                              (device-module-aliases device)))))
+    (unless (every (cute member <> linux-modules) modules)
+      (raise (condition
+              (&message
+               (message (format #f (G_ "you may need these modules \
+in the initrd for ~a:~{ ~a~}")
+                                device modules)))
+              (&error-location
+               (location (source-properties->location location))))))))
+
 ;;; linux-initrd.scm ends here