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/pymarshal/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, bson
+, pytestCheckHook
+, pyyaml
+, setuptools
+}:
+
+buildPythonPackage rec {
+  pname = "pymarshal";
+  version = "2.2.0";
+  disabled = pythonOlder "3.0";
+
+  src = fetchFromGitHub {
+    owner = "stargateaudio";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-Ds8JV2mtLRcKXBvPs84Hdj3MxxqpeV5muKCSlAFCj1A=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "'pytest-runner'" ""
+    substituteInPlace setup.cfg \
+      --replace "--cov=pymarshal --cov-report=html --cov-report=term" ""
+  '';
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  propagatedBuildInputs = [
+    bson
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    bson
+    pyyaml
+  ];
+
+  pytestFlagsArray = [ "test" ];
+
+  meta = {
+    description = "Python data serialization library";
+    homepage = "https://github.com/stargateaudio/pymarshal";
+    maintainers = with lib.maintainers; [ yuu ];
+    license = lib.licenses.bsd2;
+  };
+}