From 28b0b21e3f406cdf3ba9ff32ce80c7108d3d032e Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Mon, 22 Jan 2018 18:24:45 +0100
Subject: [PATCH] gnu: parallel: Don't end phase with #<undefined>.

* gnu/packages/parallel.scm (parallel)[arguments]: Use INVOKE.
---
 gnu/packages/parallel.scm | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gnu/packages/parallel.scm b/gnu/packages/parallel.scm
index d44a422ec2..337e9d4cb3 100644
--- a/gnu/packages/parallel.scm
+++ b/gnu/packages/parallel.scm
@@ -76,10 +76,10 @@
              #t))
          (add-after 'install 'post-install-test
            (lambda* (#:key outputs #:allow-other-keys)
-             (zero? (system* (string-append
-                              (assoc-ref outputs "out") "/bin/parallel")
-                             "echo"
-                             ":::" "1" "2" "3")))))))
+             (invoke (string-append
+                      (assoc-ref outputs "out") "/bin/parallel")
+                     "echo"
+                     ":::" "1" "2" "3"))))))
     (inputs
      `(("perl" ,perl)
        ("procps" ,procps)))