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-rw-r--r--gnu/build/file-systems.scm7
1 files changed, 4 insertions, 3 deletions
diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index 04431ba596..5814caf215 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -53,9 +53,10 @@
 ;; 'mount' is already defined in the statically linked Guile used for initial
 ;; RAM disks, but in all other cases the (guix build syscalls) module contains
 ;; the mount binding.
-(unless (defined? 'mount)
-  (module-use! (current-module)
-               (resolve-interface '(guix build syscalls))))
+(eval-when (expand load eval)
+  (unless (defined? 'mount)
+    (module-use! (current-module)
+                 (resolve-interface '(guix build syscalls)))))
 
 ;; Linux mount flags, from libc's <sys/mount.h>.
 (define MS_RDONLY 1)