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-rw-r--r--guix/gexp.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/guix/gexp.scm b/guix/gexp.scm
index 510a1d54c3..67b6121313 100644
--- a/guix/gexp.scm
+++ b/guix/gexp.scm
@@ -1443,6 +1443,7 @@ to the source files instead of copying them."
#:system system
#:guile-for-build guile
#:local-build? #t
+ #:substitutable? #f
;; Avoid deprecation warnings about the use of the _IO*
;; constants in (guix build utils).