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/pyownet/default.nix

@@ -0,0 +1,32 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "pyownet";
+  version = "0.10.0.post1";
+
+  format = "setuptools";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "4f2fa4471c2f806b35090bdc6c092305c6eded3ff3736f8b586d35bdb157de62";
+  };
+
+  postPatch = ''
+    sed -i '/use_2to3/d' setup.py
+  '';
+
+  # tests access network
+  doCheck = false;
+
+  pythonImportsCheck = [ "pyownet.protocol" ];
+
+  meta = with lib; {
+    description = "Python OWFS client library (owserver protocol)";
+    homepage = "https://github.com/miccoli/pyownet";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}