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/imantics/default.nix

@@ -0,0 +1,46 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, lib
+, numpy
+, opencv3
+, sphinx_rtd_theme
+, lxml
+, xmljson
+}:
+
+buildPythonPackage rec {
+  pname = "imantics";
+  version = "0.1.12";
+
+  src = fetchFromGitHub {
+    owner = "jsbroks";
+    repo = "imantics";
+    rev = "76d81036d8f92854d63ad9938dd76c718f8b482e";
+    sha256 = "1zv2gj8cbakhh2fyr2611cbqhfk37a56x973ny9n43y70n26pzm8";
+  };
+
+  propagatedBuildInputs = [
+    numpy
+    opencv3
+    sphinx_rtd_theme
+    lxml
+    xmljson
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "'opencv-python>=3'," ""
+  '';
+
+  # failing on NixOS
+  doCheck = false;
+
+  pythonImportsCheck = [ "imantics" ];
+
+  meta = with lib; {
+    description = "Convert and visualize many annotation formats for object dectection and localization";
+    homepage = "https://github.com/jsbroks/imantics";
+    license = with licenses; [ mit ];
+    maintainers = [ maintainers.rakesh4g ];
+  };
+}