From 584d884bd7010fb6a990978dec03a4ffe22d2fba Mon Sep 17 00:00:00 2001
From: Tuomas Tynkkynen <tuomas@tuxera.com>
Date: Tue, 26 Apr 2016 21:39:57 +0300
Subject: [PATCH] gstreamer: Fix multiple outputs split
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- Explicitly moving the files breaks them, because the wrappers
  reference the files by absolute path.  Also this automatically
  moves the manpages to $dev as well.
- Need to explicitly set --exec-prefix since the pkgconfig file has
  `toolsdir=${exec_prefix}/bin`, breaking totem:

http://hydra.nixos.org/build/34980617/nixlog/1/raw

````
checking for BACKEND_TEST... yes
checking GStreamer 1.0 inspection tool... no
configure: error:
		Cannot find required GStreamer-1.0 tool 'gst-inspect-1.0'.
		It should be part of gstreamer-1_0-utils. Please install it.

builder for ‘/nix/store/npq2ihlsdniv4j3wbyparq9byjxqdi15-totem-3.18.1.drv’ failed with exit code 1
````

While at it, enable parallel build.
---
 pkgs/development/libraries/gstreamer/core/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/gstreamer/core/default.nix b/pkgs/development/libraries/gstreamer/core/default.nix
index 162f407dd59e..bbd4bcde785b 100644
--- a/pkgs/development/libraries/gstreamer/core/default.nix
+++ b/pkgs/development/libraries/gstreamer/core/default.nix
@@ -18,6 +18,7 @@ stdenv.mkDerivation rec {
   };
 
   outputs = [ "dev" "out" ];
+  outputBin = "dev";
 
   nativeBuildInputs = [
     pkgconfig perl bison flex python gobjectIntrospection makeWrapper
@@ -25,6 +26,12 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ glib ];
 
+  enableParallelBuilding = true;
+
+  preConfigure = ''
+    configureFlagsArray+=("--exec-prefix=$dev")
+  '';
+
   postInstall = ''
     for prog in "$out/bin/"*; do
         wrapProgram "$prog" --prefix GST_PLUGIN_SYSTEM_PATH : "\$(unset _tmp; for profile in \$NIX_PROFILES; do _tmp="\$profile/lib/gstreamer-1.0''$\{_tmp:+:\}\$_tmp"; done; printf "\$_tmp")"
@@ -32,7 +39,6 @@ stdenv.mkDerivation rec {
   '';
 
   preFixup = ''
-    moveToOutput "bin" "$dev"
     moveToOutput "share/bash-completion" "$dev"
   '';