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/pysml/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, async-timeout
+, bitstring
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, pyserial-asyncio
+}:
+
+buildPythonPackage rec {
+  pname = "pysml";
+  version = "0.0.7";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "mtdcr";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-h8rQOKZozioZ7HmPETC5wBJyz7rMH1Q2wL6lF8G3zQU=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    async-timeout
+    bitstring
+    pyserial-asyncio
+  ];
+
+  # Project has no tests
+  doCheck = false;
+
+  pythonImportsCheck = [ "sml" ];
+
+  meta = with lib; {
+    description = "Python library for EDL21 smart meters using Smart Message Language (SML)";
+    homepage = "https://github.com/mtdcr/pysml";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}