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/discovery30303/default.nix

@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, poetry-core
+, pytest-asyncio
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "discovery30303";
+  version = "0.2.1";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "bdraco";
+    repo = pname;
+    # Commit points to 0.2.1, https://github.com/bdraco/discovery30303/issues/1
+    rev = "0d0b0fdca1a98662dd2e6174d25853703bd6bf07";
+    hash = "sha256-WSVMhiJxASxAkxs6RGuAVvEFS8TPxDKE9M99Rp8HKGM=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  checkInputs = [
+    pytest-asyncio
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace " --cov=discovery30303" ""
+  '';
+
+  pythonImportsCheck = [
+    "discovery30303"
+  ];
+
+  meta = with lib; {
+    description = "Module to discover devices that respond on port 30303";
+    homepage = "https://github.com/bdraco/discovery30303";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}