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/parsy/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "parsy";
+  version = "1.4.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.5";
+
+  src = fetchFromGitHub {
+    repo = "parsy";
+    owner = "python-parsy";
+    rev = "v${version}";
+    sha256 = "sha256-FislrLb+u4T5m/eEER7kazZHJKEwPHe+Vg/YDJp4PyM=";
+  };
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "parsy"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/python-parsy/parsy";
+    description = "Easy-to-use parser combinators, for parsing in pure Python";
+    license = [ licenses.mit ];
+    maintainers = with maintainers; [ milibopp ];
+  };
+}