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/persistent/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, cffi
+, fetchPypi
+, zope_interface
+, sphinx
+, manuel
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "persistent";
+  version = "4.9.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-RwGzHYHBBCJlclrzkEUOnZFq10ucF4twEAU4U1keDGo=";
+  };
+
+  nativeBuildInputs = [
+    sphinx
+    manuel
+  ];
+
+  propagatedBuildInputs = [
+    zope_interface
+    cffi
+  ];
+
+  pythonImportsCheck = [
+    "persistent"
+  ];
+
+  meta = with lib; {
+    description = "Automatic persistence for Python objects";
+    homepage = "https://github.com/zopefoundation/persistent/";
+    license = licenses.zpl21;
+    maintainers = with maintainers; [ ];
+  };
+}