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/wildmidi/default.nix

@@ -0,0 +1,41 @@
+{ lib, stdenv, fetchFromGitHub, cmake, alsa-lib, freepats }:
+
+stdenv.mkDerivation rec {
+  pname = "wildmidi";
+  version = "0.4.4";
+
+  src = fetchFromGitHub {
+    owner = "Mindwerks";
+    repo = "wildmidi";
+    rev = "${pname}-${version}";
+    sha256 = "08fbbsvw6pkwwqarjwcvdp8mq4zn5sgahf025hynwc6rvf4sp167";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ alsa-lib stdenv.cc.libc/*couldn't find libm*/ ];
+
+  preConfigure = ''
+    substituteInPlace CMakeLists.txt \
+      --replace /etc/wildmidi $out/etc
+  '';
+
+  postInstall = ''
+    mkdir "$out"/etc
+    echo "dir ${freepats}" > "$out"/etc/wildmidi.cfg
+    echo "source ${freepats}/freepats.cfg" >> "$out"/etc/wildmidi.cfg
+  '';
+
+  meta = with lib; {
+    description = "Software MIDI player and library";
+    longDescription = ''
+      WildMIDI is a simple software midi player which has a core softsynth
+      library that can be use with other applications.
+    '';
+    homepage = "http://wildmidi.sourceforge.net/";
+    # The library is LGPLv3, the wildmidi executable is GPLv3
+    license = licenses.lgpl3;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.bjornfor ];
+  };
+}