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/graphics/tesseract/tesseract3.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config
+, leptonica, libpng, libtiff, icu, pango, opencl-headers }:
+
+stdenv.mkDerivation rec {
+  pname = "tesseract";
+  version = "3.05.00";
+
+  src = fetchFromGitHub {
+    owner = "tesseract-ocr";
+    repo = "tesseract";
+    rev = version;
+    hash = "sha256-YHj00gG/3SW0ILTiQwphiCxuP9OCDya27hyFQB27mYc=";
+  };
+
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [
+    pkg-config
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    leptonica
+    libpng
+    libtiff
+    icu
+    pango
+    opencl-headers
+  ];
+
+  LIBLEPT_HEADERSDIR = "${leptonica}/include";
+
+  meta = {
+    description = "OCR engine";
+    homepage = "https://github.com/tesseract-ocr/tesseract";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ viric earvstedt ];
+    platforms = with lib.platforms; linux ++ darwin;
+  };
+}