uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/SDL2_mixer/default.nix

@@ -0,0 +1,75 @@
+{ lib, stdenv
+, fetchurl
+, pkg-config
+, AudioToolbox
+, AudioUnit
+, CoreServices
+, SDL2
+, flac
+, fluidsynth
+, libmodplug
+, libogg
+, libvorbis
+, mpg123
+, opusfile
+, smpeg2
+, timidity
+}:
+
+stdenv.mkDerivation rec {
+  pname = "SDL2_mixer";
+  version = "2.0.4";
+
+  src = fetchurl {
+    url = "https://www.libsdl.org/projects/SDL_mixer/release/${pname}-${version}.tar.gz";
+    sha256 = "0694vsz5bjkcdgfdra6x9fq8vpzrl8m6q96gh58df7065hw5mkxl";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = lib.optionals stdenv.isDarwin [
+    AudioToolbox
+    AudioUnit
+    CoreServices
+  ];
+
+  propagatedBuildInputs = [
+    SDL2
+    flac
+    fluidsynth
+    libmodplug
+    libogg
+    libvorbis
+    mpg123
+    opusfile
+    smpeg2
+    # MIDI patterns
+    timidity
+  ];
+
+  # fix default path to timidity.cfg so MIDI files could be played
+  postPatch = ''
+    substituteInPlace timidity/options.h \
+      --replace "/usr/share/timidity" "${timidity}/share/timidity"
+  '';
+
+  configureFlags = [
+    "--disable-music-ogg-shared"
+    "--disable-music-flac-shared"
+    "--disable-music-mod-modplug-shared"
+    "--disable-music-mp3-mpg123-shared"
+    "--disable-music-opus-shared"
+    "--disable-music-midi-fluidsynth-shared"
+  ] ++ lib.optionals stdenv.isDarwin [
+    "--disable-sdltest"
+    "--disable-smpegtest"
+  ];
+
+  meta = with lib; {
+    description = "SDL multi-channel audio mixer library";
+    platforms = platforms.unix;
+    homepage = "https://www.libsdl.org/projects/SDL_mixer/";
+    maintainers = with maintainers; [ MP2E ];
+    license = licenses.zlib;
+  };
+}