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-rw-r--r--gnu/packages/embedded.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/embedded.scm b/gnu/packages/embedded.scm
index 6f09c8f353..db9d518b17 100644
--- a/gnu/packages/embedded.scm
+++ b/gnu/packages/embedded.scm
@@ -830,7 +830,7 @@ simulator.")
              (lambda _
                (substitute* "opcodes/Makefile.in"
                  (("guile\\{,-\\}1.8") "guile"))
-               (zero? (system* "which" "guile")))))))
+               (invoke "which" "guile"))))))
       (native-inputs
        `(("cgen"
           ,(origin