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/findpython/default.nix

@@ -0,0 +1,53 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+
+# build time
+, pdm-pep517
+
+# runtime
+, packaging
+
+# tests
+, pytestCheckHook
+}:
+
+let
+  pname = "findpython";
+  version = "0.1.6";
+in
+buildPythonPackage {
+  inherit pname version;
+  format = "pyproject";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-n9YYXNy5a6pxCTCER++0k7LH8aj1aeEorxTXJrKmnhg=";
+  };
+
+  nativeBuildInputs = [
+    pdm-pep517
+  ];
+
+  propagatedBuildInputs = [
+    packaging
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "findpython"
+  ];
+
+  meta = with lib; {
+    description = "A utility to find python versions on your system";
+    homepage = "https://github.com/frostming/findpython";
+    license = licenses.mit;
+    maintainers = with maintainers; [ hexa ];
+  };
+}