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/cftime/default.nix

@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, cython
+, fetchPypi
+, numpy
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "cftime";
+  version = "1.6.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-ExA+ZlC+6mVSMWvVgl1qo7fpj1uBFQJt9IJnmN/590E=";
+  };
+
+  nativeBuildInputs = [
+    cython
+    numpy
+  ];
+
+  propagatedBuildInputs = [
+    numpy
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    sed -i "/--cov/d" setup.cfg
+  '';
+
+  pythonImportsCheck = [
+    "cftime"
+  ];
+
+  meta = with lib; {
+    description = "Time-handling functionality from netcdf4-python";
+    homepage = "https://github.com/Unidata/cftime";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ];
+  };
+}