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/dunamai/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, poetry-core
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, importlib-metadata
+, packaging
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "dunamai";
+  version = "1.12.0";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "mtkennerly";
+    repo = "dunamai";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-SyHml8TIcqU7KQE4IuTZbp+Jktao7ReJHQyHV8wKeWg=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    packaging
+  ] ++ lib.optionals (pythonOlder "3.8") [
+    importlib-metadata
+  ];
+
+  # needs to be able to run dunami from PATH
+  preCheck = ''
+    export PATH=$PATH:$out/bin
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "dunamai" ];
+
+  meta = with lib; {
+    description = "Dynamic version generation";
+    homepage = "https://github.com/mtkennerly/dunamai";
+    license = licenses.mit;
+    maintainers = with maintainers; [ jmgilman ];
+  };
+}