From 93ef8ca662fc3dce4e15977347baa0b9c50dd29e Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Sat, 29 Jun 2019 19:40:08 +0200
Subject: [PATCH] gnu: mesa: Do not pass an empty string argument to the build
 system.

This is a follow-up to commit 301b2e74f986385664153e6e770e238b351f5cf0.

* gnu/packages/gl.scm (mesa)[arguments]: Return the empty list instead of an
empty string for the non-matching case.
---
 gnu/packages/gl.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu/packages/gl.scm b/gnu/packages/gl.scm
index cd82b17d15..9ed043c7ae 100644
--- a/gnu/packages/gl.scm
+++ b/gnu/packages/gl.scm
@@ -318,7 +318,7 @@ also known as DXTn or DXTC) for Mesa.")
              ((or "x86_64-linux" "i686-linux")
               '("-Dvulkan-overlay-layer=true"))
              (_
-              '("")))
+              '()))
 
          ;; Also enable the tests.
          "-Dbuild-tests=true"