Higan - new package (alpha stage!)

Higan is a cycle-accurate Nintendo multi-system emulator
It is a preliminary release for Nix - I need to investigate
some issues about install process and hardcoded paths...

pkgs/misc/emulators/higan/default.nix

@@ -0,0 +1,48 @@
+{ stdenv, fetchurl
+, pkgconfig
+, libX11, libXv
+, udev
+, mesa, gtk, SDL
+, libao, openal, pulseaudio
+}:
+
+stdenv.mkDerivation rec {
+
+  name = "higan-${version}";
+  version = "094";
+  sourceName = "higan_v${version}-source";
+
+  src = fetchurl {
+    url = "http://byuu.org/files/${sourceName}.tar.xz";
+    sha256 = "06qm271pzf3qf2labfw2lx6k0xcd89jndmn0jzmnc40cspwrs52y";
+    curlOpts = "--user-agent 'Mozilla/5.0'"; # the good old user-agent trick...
+  };
+
+  buildInputs = with stdenv.lib;
+  [ pkgconfig libX11 libXv udev mesa gtk SDL libao openal pulseaudio ];
+
+  builder = ./builder.sh;
+
+  meta = {
+    description = "An open-source, cycle-accurate Nintendo multi-system emulator";
+    longDescription = ''
+      Higan (formerly bsnes) is a Nintendo multi-system emulator.
+      It currently supports the following systems:
+        Famicom; Super Famicom;
+        Game Boy; Game Boy Color; Game Boy Advance
+      higan also supports the following subsystems:
+        Super Game Boy; BS-X Satellaview; Sufami Turbo
+    '';
+    homepage = http://byuu.org/higan/;
+    license = stdenv.lib.licenses.gpl3Plus;
+    maintainers = [ stdenv.lib.maintainers.AndersonTorres ];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}
+
+#
+# TODO:
+#   - options to choose profiles (accuracy, balanced, performance)
+#     and different GUIs (gtk2, qt4)
+#   - fix the BML and BIOS paths - maybe a custom patch to Higan project?
+#