Add expression for the YUI compressor

pkgs/development/tools/yuicompressor/default.nix

@@ -0,0 +1,23 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "yuicompressor";
+  version = "2.4.8";
+  src = fetchurl {
+    url = "http://github.com/yui/yuicompressor/releases/download/v${version}/${name}-${version}.jar";
+    sha256 = "1qjxlak9hbl9zd3dl5ks0w4zx5z64wjsbk7ic73r1r45fasisdrh";
+  };
+
+  meta = {
+    description = "A JavaScript and CSS minifier";
+    maintainers = [ stdenv.lib.maintainers.jwiegley ];
+    platforms = stdenv.lib.platforms.all;
+    homepage = http://yui.github.io/yuicompressor/;
+    license = stdenv.lib.licenses.bsd3;
+  };
+
+  buildCommand = ''
+    ensureDir $out/lib
+    ln -s $src $out/lib/yuicompressor.jar
+  '';
+}

pkgs/top-level/all-packages.nix

@@ -6315,6 +6315,7 @@ let
 
   jquery_ui = callPackage ../development/libraries/javascript/jquery-ui { };
 
+  yuicompressor = callPackage ../development/tools/yuicompressor { };
 
   ### DEVELOPMENT / LISP MODULES