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/keras/default.nix

@@ -0,0 +1,37 @@
+{ lib, buildPythonPackage, fetchPypi
+, pytest, pytest-cov, pytest-xdist
+, six, numpy, scipy, pyyaml, h5py
+, keras-applications, keras-preprocessing
+}:
+
+buildPythonPackage rec {
+  pname = "keras";
+  version = "2.8.0";
+  format = "wheel";
+
+  src = fetchPypi {
+    inherit format pname version;
+    sha256 = "sha256-dE053GV33NgP9KTUFUnpK3fWoX4O3VikMdMGVuKbyU4=";
+  };
+
+  checkInputs = [
+    pytest
+    pytest-cov
+    pytest-xdist
+  ];
+
+  propagatedBuildInputs = [
+    six pyyaml numpy scipy h5py
+    keras-applications keras-preprocessing
+  ];
+
+  # Couldn't get tests working
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Deep Learning library for Theano and TensorFlow";
+    homepage = "https://keras.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [ NikolaMandic ];
+  };
+}