From 12c15242f422ab62bc0e653365c692047386b604 Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Thu, 5 Jan 2017 17:24:03 +0100
Subject: [PATCH] gnu: beep: Ignore substitute* return value.

* gnu/packages/terminals.scm (beep)[arguments]: End 'patch-makefile phase
with truth.
---
 gnu/packages/terminals.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/terminals.scm b/gnu/packages/terminals.scm
index 0b671d0ba9..20897860d2 100644
--- a/gnu/packages/terminals.scm
+++ b/gnu/packages/terminals.scm
@@ -347,7 +347,8 @@ types of devices that provide serial consoles.")
          (delete 'configure)
          (add-after 'unpack 'patch-makefile
            (lambda* (#:key outputs #:allow-other-keys)
-             (substitute* "Makefile" (("/usr") (assoc-ref outputs "out")))))
+             (substitute* "Makefile" (("/usr") (assoc-ref outputs "out")))
+             #t))
          (add-before 'install 'create-output-directories
            (lambda* (#:key outputs #:allow-other-keys)
              (let ((out (assoc-ref %outputs "out")))