pkgs/os-specific/darwin/lipo: add support for running the native Darwin lipo utility

svn path=/nixpkgs/trunk/; revision=21426

pkgs/os-specific/darwin/lipo/builder.sh

@@ -0,0 +1,3 @@
+source $stdenv/setup
+mkdir -p "$out/bin"
+ln -s /usr/bin/lipo "$out/bin/"

pkgs/os-specific/darwin/lipo/default.nix

@@ -0,0 +1,8 @@
+{stdenv}:
+
+assert stdenv.isDarwin;
+
+stdenv.mkDerivation {
+  name = "darwin-lipo-utility";
+  builder = ./builder.sh;
+}

pkgs/top-level/all-packages.nix

@@ -5826,6 +5826,10 @@ let
     inherit stdenv;
   };
 
+  darwinLipoUtility = import ../os-specific/darwin/lipo {
+    inherit stdenv;
+  };
+
   devicemapper = lvm2;
 
   dmidecode = import ../os-specific/linux/dmidecode {