From 2371f85fac9822d666b0f2d5db0ee5f5f33a4e79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9-Patrick=20Bubel?= <code@andre-bubel.de>
Date: Wed, 27 Jun 2018 23:53:55 +0200
Subject: [PATCH 1/2] rtaudio: Enable parallel building

---
 pkgs/development/libraries/audio/rtaudio/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/audio/rtaudio/default.nix b/pkgs/development/libraries/audio/rtaudio/default.nix
index 1df696c0ec64..7f1e3d941a1a 100644
--- a/pkgs/development/libraries/audio/rtaudio/default.nix
+++ b/pkgs/development/libraries/audio/rtaudio/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
     sha256 = "0jkqnhc2pq31nmq4daxhmqdjgv2qi4ib27hwms2r5zhnmvvzlr67";
   };
 
+  enableParallelBuilding = true;
+
   buildInputs = [ autoconf automake libtool libjack2 alsaLib rtmidi ];
 
   preConfigure = ''

From 9e61c281f7b5d3d974c878b3c0209240f516101d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9-Patrick=20Bubel?= <code@andre-bubel.de>
Date: Wed, 27 Jun 2018 23:54:37 +0200
Subject: [PATCH 2/2] rtmidi: Enable parallel building

---
 pkgs/development/libraries/audio/rtmidi/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/audio/rtmidi/default.nix b/pkgs/development/libraries/audio/rtmidi/default.nix
index 022c55045967..0f3f1fce42b0 100644
--- a/pkgs/development/libraries/audio/rtmidi/default.nix
+++ b/pkgs/development/libraries/audio/rtmidi/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
     sha256 = "11pl45lp8sq5xkpipwk622w508nw0qcxr03ibicqn1lsws0hva96";
   };
 
+  enableParallelBuilding = true;
+
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ autoconf automake libtool libjack2 alsaLib ];