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/colorcet/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, param
+, pyct
+, pytest-mpl
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "colorcet";
+  version = "3.0.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "21c522346a7aa81a603729f2996c22ac3f7822f4c8c303c59761e27d2dfcf3db";
+  };
+
+  propagatedBuildInputs = [
+    param
+    pyct
+  ];
+
+  checkInputs = [
+    pytest-mpl
+    pytestCheckHook
+  ];
+
+  preCheck = ''
+    export HOME=$(mktemp -d)
+    mkdir -p $HOME/.config/matplotlib
+    echo "backend: ps" > $HOME/.config/matplotlib/matplotlibrc
+    ln -s $HOME/.config/matplotlib $HOME/.matplotlib
+  '';
+
+  disabledTests = [
+    "matplotlib_default_colormap_plot"
+  ];
+
+  pythonImportsCheck = [
+    "colorcet"
+  ];
+
+  meta = with lib; {
+    description = "Collection of perceptually uniform colormaps";
+    homepage = "https://colorcet.pyviz.org";
+    license = licenses.cc-by-40;
+    maintainers = with maintainers; [ costrouc ];
+  };
+}