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/pvo/default.nix

@@ -0,0 +1,61 @@
+{ lib
+, aiohttp
+, aresponses
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, pydantic
+, pytest-asyncio
+, pytestCheckHook
+, pythonOlder
+, yarl
+}:
+
+buildPythonPackage rec {
+  pname = "pvo";
+  version = "0.2.2";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.8";
+
+  src = fetchFromGitHub {
+    owner = "frenck";
+    repo = "python-pvoutput";
+    rev = "v${version}";
+    sha256 = "sha256-2/O81MnFYbdOrzLiTSoX7IW+3ZGyyE/tIqgKr/sEaHI=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    aiohttp
+    pydantic
+    yarl
+  ];
+
+  checkInputs = [
+    aresponses
+    pytest-asyncio
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    # Upstream doesn't set a version for the pyproject.toml
+    substituteInPlace pyproject.toml \
+      --replace "0.0.0" "${version}" \
+      --replace "--cov" ""
+  '';
+
+  pythonImportsCheck = [
+    "pvo"
+  ];
+
+  meta = with lib; {
+    description = "Python module to interact with the PVOutput API";
+    homepage = "https://github.com/frenck/python-pvoutput";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}