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/python-dotenv/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, click
+, fetchPypi
+, ipython
+, mock
+, pytestCheckHook
+, pythonOlder
+, sh
+}:
+
+buildPythonPackage rec {
+  pname = "python-dotenv";
+  version = "0.20.0";
+  disabled = pythonOlder "3.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-t+OwSllpPELDb5qxzCrMRvpd+MeOF4/DOo1M0FyNSY8=";
+  };
+
+  propagatedBuildInputs = [ click ];
+
+  checkInputs = [
+    ipython
+    mock
+    pytestCheckHook
+    sh
+  ];
+
+  disabledTests = [
+    "cli"
+  ];
+
+  pythonImportsCheck = [ "dotenv" ];
+
+  meta = with lib; {
+    description = "Add .env support to your django/flask apps in development and deployments";
+    homepage = "https://github.com/theskumar/python-dotenv";
+    license = licenses.bsdOriginal;
+    maintainers = with maintainers; [ earvstedt ];
+  };
+}