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/envoy-reader/default.nix

@@ -0,0 +1,60 @@
+{ lib
+, beautifulsoup4
+, buildPythonPackage
+, envoy-utils
+, fetchFromGitHub
+, fetchpatch
+, httpx
+, pyjwt
+, pytest-asyncio
+, pytestCheckHook
+, pytest-raises
+, pythonOlder
+, respx
+}:
+
+buildPythonPackage rec {
+  pname = "envoy-reader";
+  version = "0.21.3";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "jesserizzo";
+    repo = "envoy_reader";
+    rev = version;
+    sha256 = "sha256-aIpZ4ln4L57HwK8H0FqsyNnXosnAp3ingrJI6/MPS90=";
+  };
+
+  propagatedBuildInputs = [
+    beautifulsoup4
+    envoy-utils
+    httpx
+    pyjwt
+  ];
+
+  checkInputs = [
+    pytest-raises
+    pytest-asyncio
+    pytestCheckHook
+    respx
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "pytest-runner>=5.2" "" \
+      --replace "pyjwt==2.1.0" "pyjwt>=2.1.0"
+  '';
+
+  pythonImportsCheck = [
+    "envoy_reader"
+  ];
+
+  meta = with lib; {
+    description = "Python module to read from Enphase Envoy units";
+    homepage = "https://github.com/jesserizzo/envoy_reader";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}