tests: Add missing import.

* guix/tests.scm: Add missing import, needed by 'dummy-package'.

diff --git a/guix/tests.scm b/guix/tests.scm
index 451c1ba..1171bb4 100644 (file)
--- a/guix/tests.scm
+++ b/guix/tests.scm
@@ -23,6 +23,7 @@
   #:use-module (guix base32)
   #:use-module (guix serialization)
   #:use-module (guix hash)
+  #:use-module (guix build-system gnu)
   #:use-module (gnu packages bootstrap)
   #:use-module (srfi srfi-34)
   #:use-module (rnrs bytevectors)