From 575065bd1c3fbe80ee725bbc483aecfc6e870a1c Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Sun, 10 Sep 2017 11:42:51 +0100
Subject: [PATCH] vm: Add comment about deduplication in make-iso9660-image.

* gnu/build/vm.scm (make-iso9660-image): Add comment about the use of
  #:deduplicate #f when calling register-closure.
---
 gnu/build/vm.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index f6228b40bb..466e3daf44 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -385,6 +385,7 @@ (define* (make-iso9660-image grub config-file os-drv target
                   (register-closure
                    "/tmp/root"
                    (string-append "/xchg/" closure)
+                   ;; XXX: Using deduplication causes cross device link errors.
                    #:deduplicate? #f))
                 closures))