Added XZ package

svn path=/nixpkgs/trunk/; revision=16989

pkgs/tools/compression/xz/default.nix

@@ -0,0 +1,17 @@
+{stdenv, fetchurl, lib}:
+
+stdenv.mkDerivation {
+  name = "xz";
+  
+  src = fetchurl {
+    url = http://tukaani.org/xz/xz-4.999.9beta.tar.bz2;
+    sha256 = "0p51d9jng9vfh56idhjbc40n3ypapznwfb1npsvxh23n772140rk";
+  };
+
+  meta = {
+    homepage = http://tukaani.org/xz/;
+    description = "Successor of the LZMA Utils package";
+    license = "GPL/LGPL";
+    maintainers = [ lib.maintainers.sander ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -978,6 +978,10 @@ let
   lzma = import ../tools/compression/lzma {
     inherit fetchurl stdenv;
   };
+  
+  xz = import ../tools/compression/xz {
+    inherit fetchurl stdenv lib;
+  };
 
   lzop = import ../tools/compression/lzop {
     inherit fetchurl stdenv lzo;