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/wtforms/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, markupsafe
+, babel
+, pytestCheckHook
+, email_validator
+}:
+
+buildPythonPackage rec {
+  version = "3.0.1";
+  pname = "wtforms";
+
+  src = fetchPypi {
+    pname = "WTForms";
+    inherit version;
+    sha256 = "1g654ghavds387hqxmhg9s8x222x89wbq1ggzxbsyn6x2axindbb";
+  };
+
+  propagatedBuildInputs = [ markupsafe babel ];
+
+
+  checkInputs = [
+    pytestCheckHook
+    email_validator
+  ];
+
+  pythonImportsCheck = [ "wtforms" ];
+
+  meta = with lib; {
+    description = "A flexible forms validation and rendering library for Python";
+    homepage = "https://github.com/wtforms/wtforms";
+    changelog = "https://github.com/wtforms/wtforms/blob/${version}/CHANGES.rst";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.bhipple ];
+  };
+
+}