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/ir.lv2/default.nix

@@ -0,0 +1,43 @@
+{ lib, stdenv, fetchFromGitHub, fftw, gtk2, lv2, libsamplerate, libsndfile, pkg-config, zita-convolver }:
+
+stdenv.mkDerivation rec {
+  pname = "ir.lv2";
+  version = "1.2.4";
+
+  src = fetchFromGitHub {
+    owner = "tomszilagyi";
+    repo = "ir.lv2";
+    rev = version;
+    sha256 = "1p6makmgr898fakdxzl4agh48qqwgv1k1kwm8cgq187n0mhiknp6";
+  };
+
+  buildInputs = [ fftw gtk2 lv2 libsamplerate libsndfile zita-convolver ];
+
+  nativeBuildInputs = [  pkg-config ];
+
+  postPatch = ''
+     # Fix build with lv2 1.18: https://github.com/tomszilagyi/ir.lv2/pull/20
+     find . -type f -exec fgrep -q LV2UI_Descriptor {} \; \
+       -exec sed -i {} -e 's/const struct _\?LV2UI_Descriptor/const LV2UI_Descriptor/' \;
+   '';
+
+
+  postBuild = "make convert4chan";
+
+  installPhase = ''
+    mkdir -p "$out/bin"
+    mkdir "$out/include"
+    mkdir -p "$out/share/doc"
+
+    make PREFIX="$out" INSTDIR="$out/lib/lv2" install
+    install -Dm755 convert4chan "$out/bin/convert4chan"
+  '';
+
+  meta = with lib; {
+    homepage = "http://factorial.hu/plugins/lv2/ir";
+    description = "Zero-latency, realtime, high performance signal convolver especially for creating reverb effects";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.magnetophon ];
+    platforms = platforms.linux;
+  };
+}