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/rfcat/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, future
+, ipython
+, numpy
+, pyserial
+, pyusb
+, hostPlatform
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "rfcat";
+  version = "1.9.5";
+
+  src = fetchFromGitHub {
+    owner = "atlas0fd00m";
+    repo = "rfcat";
+    rev = "v${version}";
+    sha256 = "1mmr7g7ma70sk6vl851430nqnd7zxsk7yb0xngwrdx9z7fbz2ck0";
+  };
+
+  propagatedBuildInputs = [
+    future
+    ipython
+    numpy
+    pyserial
+    pyusb
+  ];
+
+  postInstall = lib.optionalString hostPlatform.isLinux ''
+    mkdir -p $out/etc/udev/rules.d
+    cp etc/udev/rules.d/20-rfcat.rules $out/etc/udev/rules.d
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "rflib" ];
+
+  meta = with lib; {
+    description = "Swiss Army knife of sub-GHz ISM band radio";
+    homepage = "https://github.com/atlas0fd00m/rfcat";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ trepetti ];
+    changelog = "https://github.com/atlas0fd00m/rfcat/releases/tag/v${version}";
+  };
+}