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/nbval/default.nix

@@ -0,0 +1,69 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, coverage
+, ipykernel
+, jupyter-client
+, nbformat
+, pytestCheckHook
+, pytest
+, six
+, glibcLocales
+, matplotlib
+, sympy
+}:
+
+buildPythonPackage rec {
+  pname = "nbval";
+  version = "0.9.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "cfefcd2ef66ee2d337d0b252c6bcec4023384eb32e8b9e5fcc3ac80ab8cd7d40";
+  };
+
+  buildInputs = [
+    glibcLocales
+  ];
+
+  propagatedBuildInputs = [
+    coverage
+    ipykernel
+    jupyter-client
+    nbformat
+    pytest
+    six
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    matplotlib
+    sympy
+  ];
+
+  disabledTestPaths = [
+    "tests/test_ignore.py"
+    # These are the main tests but they're fragile so skip them. They error
+    # whenever matplotlib outputs any unexpected warnings, e.g. deprecation
+    # warnings.
+    "tests/test_unit_tests_in_notebooks.py"
+    # Impure
+    "tests/test_timeouts.py"
+    # No value for us
+    "tests/test_coverage.py"
+  ];
+
+  # Some of the tests use localhost networking.
+  __darwinAllowLocalNetworking = true;
+
+  pythonImportsCheck = [
+    "nbval"
+  ];
+
+  meta = with lib; {
+    description = "A py.test plugin to validate Jupyter notebooks";
+    homepage = "https://github.com/computationalmodelling/nbval";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ costrouc ];
+  };
+}