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/qdldl/default.nix

@@ -0,0 +1,40 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, cmake
+, pybind11
+, numpy
+, scipy
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "qdldl";
+  version = "0.1.5.post0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c392c7427651d8b226423c7aba4a0f2338a1f38a4bbdabac6bc4afd8bc934f06";
+  };
+
+  dontUseCmakeConfigure = true;
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ pybind11 ];
+
+  propagatedBuildInputs = [
+    numpy
+    scipy
+  ];
+
+  pythonImportsCheck = [ "qdldl" ];
+  checkInputs = [ pytestCheckHook ];
+
+  meta = with lib; {
+    description = "A free LDL factorization routine";
+    homepage = "https://github.com/oxfordcontrol/qdldl";
+    downloadPage = "https://github.com/oxfordcontrol/qdldl-python";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ drewrisinger ];
+  };
+}