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/dufte/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, importlib-metadata
+, matplotlib
+, numpy
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "dufte";
+  version = "0.2.29";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "nschloe";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256:0ccsmpj160xj6w503a948aw8icj55mw9414xnmijmmjvlwhm0p48";
+  };
+  format = "pyproject";
+
+  propagatedBuildInputs = [
+    matplotlib
+    numpy
+  ] ++ lib.optionals (pythonOlder "3.8") [
+    importlib-metadata
+  ];
+
+  preCheck = ''
+    export HOME=$(mktemp -d)
+    mkdir -p $HOME/.config/matplotlib
+    echo "backend: ps" > $HOME/.config/matplotlib/matplotlibrc
+    ln -s $HOME/.config/matplotlib $HOME/.matplotlib
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "dufte" ];
+
+  meta = with lib; {
+    description = "Clean matplotlib plots";
+    homepage = "https://github.com/nschloe/dufte";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ ris ];
+  };
+}