From c23d50a82b5d55b65adf4721500592727fc4fb12 Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Sun, 24 Jun 2018 20:29:20 +0200
Subject: [PATCH] gnu: rtmidi: Return #t from all phases.

* gnu/packages/audio.scm (rtmidi)[arguments]: Substitute INVOKE for
SYSTEM*.
---
 gnu/packages/audio.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 986a429a0b..fce4681ddb 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -2249,7 +2249,7 @@ tempo and pitch of an audio recording independently of one another.")
        #:phases (modify-phases %standard-phases
                   (add-after
                    'unpack 'autoconf
-                   (lambda _ (zero? (system* "autoreconf" "-vfi"))))
+                   (lambda _ (invoke "autoreconf" "-vfi")))
                   (add-before
                    'build 'fix-makefile
                    (lambda _