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/applications/audio/keyfinder/default.nix

@@ -0,0 +1,40 @@
+{ lib, mkDerivation, fetchFromGitHub, libav_0_8, libkeyfinder, qtbase, qtxmlpatterns, qmake, taglib }:
+
+mkDerivation rec {
+  pname = "keyfinder";
+  version = "2.4";
+
+  src = fetchFromGitHub {
+    sha256 = "11yhdwan7bz8nn8vxr54drckyrnlxynhx5s981i475bbccg8g7ls";
+    rev = "530034d6fe86d185f6a68b817f8db5f552f065d7"; # tag is missing
+    repo = "is_KeyFinder";
+    owner = "ibsh";
+  };
+
+  nativeBuildInputs = [ qmake ];
+  buildInputs = [ libav_0_8 libkeyfinder qtbase qtxmlpatterns taglib ];
+
+  postPatch = ''
+    substituteInPlace is_KeyFinder.pro \
+       --replace "-stdlib=libc++" "" \
+       --replace "\$\$[QT_INSTALL_PREFIX]" "$out"
+  '';
+
+  dontWrapQtApps = true;
+
+  meta = with lib; {
+    description = "Musical key detection for digital audio (graphical UI)";
+    longDescription = ''
+      KeyFinder is an open source key detection tool, for DJs interested in
+      harmonic and tonal mixing. Designed primarily for electronic and dance
+      music, it is highly configurable and can be applied to many genres. It
+      supports a huge range of codecs thanks to LibAV, and writes to metadata
+      tags using TagLib. It's intended to be very focused: no library
+      management, no track suggestions, no media player. Just a fast,
+      efficient workflow tool.
+    '';
+    homepage = "http://www.ibrahimshaath.co.uk/keyfinder/";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+  };
+}