Split a few libraries into multiple outputs

pkgs/development/libraries/libvorbis/default.nix

@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation rec {
   name = "libvorbis-1.3.3";
-  
+
   src = fetchurl {
     url = "http://downloads.xiph.org/releases/vorbis/${name}.tar.xz";
     sha256 = "1gby6hapz9njx4l9g0pndyk4q83z5fgrgc30mfwfgx7bllspsk43";
@@ -11,6 +11,22 @@ stdenv.mkDerivation rec {
   buildNativeInputs = [ xz ];
   propagatedBuildInputs = [ libogg ];
 
+  outputs = [ "dev" "out" "doc" ];
+
+  configureFlags = [ "--includedir=$(dev)/include" ];
+
+  installFlags = [ "pkgconfigdir=$(dev)/lib/pkgconfig" ];
+
+  postInstall =
+    ''
+      mkdir -p $doc/share/doc
+      mv $out/share/doc/* $doc/share/doc
+
+      mkdir -p "$dev/nix-support"
+      echo "$propagatedBuildNativeInputs $out" > "$dev/nix-support/propagated-build-native-inputs"
+      propagatedBuildNativeInputs=
+    ''; # */
+
   meta = {
     homepage = http://xiph.org/vorbis/;
   };