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-rw-r--r--gnu/build/vm.scm18
1 files changed, 16 insertions, 2 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index ac99d6b1a3..a5d9fefa62 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -423,7 +423,8 @@ SYSTEM-DIRECTORY is the name of the directory of the 'system' derivation."
             ;; Graft the configuration file onto the image.
             (string-append "boot/grub/grub.cfg=" config-file))))
 
-(define* (make-iso9660-image grub config-file os-drv target
+(define* (make-iso9660-image xorriso grub-mkrescue-environment
+                             grub config-file os-drv target
                              #:key (volume-id "Guix_image") (volume-uuid #f)
                              register-closures? (closures '()))
   "Given a GRUB package, creates an iso image as TARGET, using CONFIG-FILE as
@@ -431,6 +432,9 @@ GRUB configuration and OS-DRV as the stuff in it."
   (define grub-mkrescue
     (string-append grub "/bin/grub-mkrescue"))
 
+  (define grub-mkrescue-sed.sh
+    (string-append xorriso "/bin/grub-mkrescue-sed.sh"))
+
   (define target-store
     (string-append "/tmp/root" (%store-directory)))
 
@@ -483,9 +487,19 @@ GRUB configuration and OS-DRV as the stuff in it."
                               #x77777777)
                           16))
 
+  (setenv "MKRESCUE_SED_MODE" "original")
+  (setenv "MKRESCUE_SED_XORRISO" (string-append xorriso
+                                                "/bin/xorriso"))
+  (setenv "MKRESCUE_SED_IN_EFI_NO_PT" "yes")
+  (for-each (match-lambda
+             ((name . value) (setenv name value)))
+            grub-mkrescue-environment)
+
   (let ((pipe
          (apply open-pipe* OPEN_WRITE
-                grub-mkrescue "-o" target
+                grub-mkrescue
+                (string-append "--xorriso=" grub-mkrescue-sed.sh)
+                "-o" target
                 (string-append "boot/grub/grub.cfg=" config-file)
                 "etc=/tmp/root/etc"
                 "var=/tmp/root/var"