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/nengo/default.nix

@@ -0,0 +1,36 @@
+{ lib, fetchFromGitHub, buildPythonPackage
+, numpy
+, scipySupport ? false, scipy
+, scikitSupport ? false, scikit-learn
+}:
+
+buildPythonPackage rec {
+  pname = "nengo";
+  version = "3.2.0";
+
+  src = fetchFromGitHub {
+    owner = "nengo";
+    repo = "nengo";
+    rev = "v${version}";
+    sha256 = "12lz8lzirxvwnpa74k9k48c64gs6gi092928rh97siya3i6gjs6i";
+  };
+
+  propagatedBuildInputs = [ numpy ]
+    ++ lib.optionals scipySupport [ scipy ]
+    ++ lib.optionals scikitSupport [ scikit-learn ];
+
+  # checks req missing:
+  #   pytest-allclose
+  #   pytest-plt
+  #   pytest-rng
+  doCheck = false;
+
+  pythonImportsCheck = [ "nengo" ];
+
+  meta = with lib; {
+    description = "A Python library for creating and simulating large-scale brain models";
+    homepage    = "https://nengo.ai/";
+    license     = licenses.unfreeRedistributable;
+    maintainers = with maintainers; [ arjix ];
+  };
+}