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/einops/default.nix

@@ -0,0 +1,74 @@
+{ lib
+, buildPythonPackage
+, chainer
+, fetchFromGitHub
+, jupyter
+, keras
+  #, mxnet
+, nbconvert
+, nbformat
+, nose
+, numpy
+, parameterized
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "einops";
+  version = "0.4.1";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "arogozhnikov";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-n4R4lcRimuOncisCTs2zJWPlqZ+W2yPkvkWAnx4R91s=";
+  };
+
+  checkInputs = [
+    chainer
+    jupyter
+    keras
+    # mxnet (has issues with some CPUs, segfault)
+    nbconvert
+    nbformat
+    nose
+    numpy
+    parameterized
+    pytestCheckHook
+  ];
+
+  # No CUDA in sandbox
+  EINOPS_SKIP_CUPY = 1;
+
+  preCheck = ''
+    export HOME=$(mktemp -d);
+  '';
+
+  pythonImportsCheck = [
+    "einops"
+  ];
+
+  disabledTests = [
+    # Tests are failing as mxnet is not pulled-in
+    # https://github.com/NixOS/nixpkgs/issues/174872
+    "test_all_notebooks"
+    "test_dl_notebook_with_all_backends"
+    "test_backends_installed"
+  ];
+
+  disabledTestPaths = [
+    "tests/test_layers.py"
+  ];
+
+  meta = with lib; {
+    description = "Flexible and powerful tensor operations for readable and reliable code";
+    homepage = "https://github.com/arogozhnikov/einops";
+    license = licenses.mit;
+    maintainers = with maintainers; [ yl3dy ];
+  };
+}
+