From 2dff799a10b8ba5d8424947c01fd10fad3d45f36 Mon Sep 17 00:00:00 2001
From: Peter Hoeg <peter@hoeg.com>
Date: Sun, 10 Sep 2017 15:44:52 +0800
Subject: [PATCH] sane-backends: support parallel building

---
 pkgs/applications/graphics/sane/backends/generic.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/graphics/sane/backends/generic.nix b/pkgs/applications/graphics/sane/backends/generic.nix
index ff3ebfad484a..3ef23142b2ed 100644
--- a/pkgs/applications/graphics/sane/backends/generic.nix
+++ b/pkgs/applications/graphics/sane/backends/generic.nix
@@ -20,12 +20,13 @@ stdenv.mkDerivation {
   outputs = [ "out" "doc" "man" ];
 
   configureFlags = []
-    ++ stdenv.lib.optional (avahi != null) "--enable-avahi"
+    ++ stdenv.lib.optional (avahi != null)   "--enable-avahi"
     ++ stdenv.lib.optional (libusb1 != null) "--enable-libusb_1_0"
     ;
 
   buildInputs = [ avahi libusb1 libv4l net_snmp ];
   nativeBuildInputs = [ gettext pkgconfig ];
+  enableParallelBuilding = true;
 
   postInstall = let