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/python-modules/hocr-tools/default.nix

@@ -0,0 +1,31 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, lxml
+, pillow
+, reportlab
+, lib
+}:
+buildPythonPackage rec {
+  pname = "hocr-tools";
+  version = "1.3.0";
+
+  src = fetchFromGitHub {
+    owner = "tmbdev";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "14f9hkp7pr677085w8iidwd0la9cjzy3pyj3rdg9b03nz9pc0w6p";
+  };
+
+  # hocr-tools uses a test framework that requires internet access
+  doCheck = false;
+
+  propagatedBuildInputs = [ pillow lxml reportlab ];
+
+  meta = with lib; {
+    description = "
+Tools for manipulating and evaluating the hOCR format for representing multi-lingual OCR results by embedding them into HTML";
+    homepage = "https://github.com/tmbdev/hocr-tools";
+    license = licenses.asl20;
+    maintainers = [ maintainers.kiwi ];
+  };
+}