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/dataclasses-serialization/default.nix

@@ -0,0 +1,66 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, more-properties
+, typing-inspect
+, toolz
+, toposort
+, bson
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "dataclasses-serialization";
+  version = "1.3.1";
+
+  # upstream requires >= 3.6 but only 3.7 includes dataclasses
+  disabled = pythonOlder "3.7";
+
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "madman-bob";
+    repo = "python-dataclasses-serialization";
+    rev = version;
+    hash = "sha256-jLMR2D01KgzHHRP0zduMBJt8xgBmIquWLCjZYLo2/AA=";
+  };
+
+  postPatch = ''
+    mv pypi_upload/setup.py .
+    substituteInPlace setup.py \
+      --replace "project_root = Path(__file__).parents[1]" "project_root = Path(__file__).parents[0]"
+
+    # dataclasses is included in Python 3.7
+    substituteInPlace requirements.txt \
+      --replace dataclasses ""
+
+    # https://github.com/madman-bob/python-dataclasses-serialization/issues/16
+    sed -i '/(\(Dict\|List\)/d' tests/test_json.py tests/test_bson.py
+  '';
+
+  propagatedBuildInputs = [
+    more-properties
+    typing-inspect
+    toolz
+    toposort
+  ];
+
+  checkInputs = [
+    bson
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "dataclasses_serialization.bson"
+    "dataclasses_serialization.json"
+    "dataclasses_serialization.serializer_base"
+  ];
+
+  meta = {
+    description = "Serialize/deserialize Python dataclasses to various other data formats";
+    homepage = "https://github.com/madman-bob/python-dataclasses-serialization";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ dotlambda ];
+  };
+}