From c894ee95c1ba5e13623aad85a146bb9150740046 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Thu, 1 Sep 2016 14:12:17 +0200
Subject: [PATCH] libyaml-cpp: Build a shared library

Also, use multiple outputs.
---
 pkgs/development/libraries/libyaml-cpp/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/libyaml-cpp/default.nix b/pkgs/development/libraries/libyaml-cpp/default.nix
index 21442cd1624..2ceaf1520fc 100644
--- a/pkgs/development/libraries/libyaml-cpp/default.nix
+++ b/pkgs/development/libraries/libyaml-cpp/default.nix
@@ -11,8 +11,14 @@ stdenv.mkDerivation rec {
     sha256 = "0qr286q8mwbr4cxz0y0rf045zc071qh3cb804by6w1ydlqciih8a";
   };
 
+  outputs = [ "dev" "out" ];
+
   buildInputs = [ cmake boost ];
 
+  cmakeFlags = "-DBUILD_SHARED_LIBS=ON";
+
+  enableParallelBuilding = true;
+
   meta = with stdenv.lib; {
     inherit (src.meta) homepage;
     description = "A YAML parser and emitter for C++";