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/python-csxcad/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, cython
+, openems
+, csxcad
+, numpy
+, matplotlib
+}:
+
+buildPythonPackage rec {
+  pname = "python-csxcad";
+  version = "unstable-2020-02-18";
+
+  src = fetchFromGitHub {
+    owner = "thliebig";
+    repo = "CSXCAD";
+    rev = "ef6e40931dbd80e0959f37c8e9614c437bf7e518";
+    sha256 = "072s765jyzpdq8qqysdy0dld17m6sr9zfcs0ip2zk8c4imxaysnb";
+  };
+
+  sourceRoot = "source/python";
+
+  nativeBuildInputs = [
+    cython
+  ];
+
+  propagatedBuildInputs = [
+    openems
+    csxcad
+    numpy
+    matplotlib
+  ];
+
+  setupPyBuildFlags = "-I${openems}/include -L${openems}/lib -R${openems}/lib";
+
+  meta = with lib; {
+    description = "Python interface to CSXCAD";
+    homepage = "http://openems.de/index.php/Main_Page.html";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ matthuszagh ];
+    platforms = platforms.linux;
+  };
+}