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/optax/default.nix

@@ -0,0 +1,59 @@
+{ absl-py
+, buildPythonPackage
+, chex
+, dm-haiku
+, fetchFromGitHub
+, jaxlib
+, lib
+, numpy
+, pytest-xdist
+, pytestCheckHook
+, tensorflow
+, tensorflow-datasets
+}:
+
+buildPythonPackage rec {
+  pname = "optax";
+  version = "0.1.1";
+
+  src = fetchFromGitHub {
+    owner = "deepmind";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-s/BcqzhdfWzR61MStusUPQtuT4+t8NcC5gBGiGggFqw=";
+  };
+
+  buildInputs = [ jaxlib ];
+
+  propagatedBuildInputs = [
+    absl-py
+    chex
+    numpy
+  ];
+
+  checkInputs = [
+    dm-haiku
+    pytest-xdist
+    pytestCheckHook
+    tensorflow
+    tensorflow-datasets
+  ];
+
+  pythonImportsCheck = [
+    "optax"
+  ];
+
+  disabledTestPaths = [
+    # Requires `flax` which depends on `optax` creating circular dependency.
+    "optax/_src/equivalence_test.py"
+    # See https://github.com/deepmind/optax/issues/323.
+    "examples/lookahead_mnist_test.py"
+  ];
+
+  meta = with lib; {
+    description = "Optax is a gradient processing and optimization library for JAX.";
+    homepage = "https://github.com/deepmind/optax";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ndl ];
+  };
+}