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/hcloud/default.nix

@@ -0,0 +1,40 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, future
+, requests
+, python-dateutil
+, flake8
+, isort
+, mock
+, pytest
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "hcloud";
+  version = "1.16.0";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c8b94557d93bcfe437f20a8176693ea4f54358b74986cc19d94ebc23f48e40cc";
+  };
+
+  propagatedBuildInputs = [ future requests python-dateutil ];
+
+  checkInputs = [ flake8 isort mock pytest ];
+
+  # Skip integration tests since they require a separate external fake API endpoint.
+  checkPhase = ''
+    pytest --ignore=tests/integration
+  '';
+
+  meta = with lib; {
+    description = "Official Hetzner Cloud python library";
+    homepage = "https://github.com/hetznercloud/hcloud-python";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ liff ];
+  };
+}