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/skidl/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, future
+, kinparse
+, pyspice
+, graphviz
+}:
+
+buildPythonPackage rec {
+  pname = "skidl";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
+    owner = "xesscorp";
+    repo = "skidl";
+    rev = version;
+    sha256 = "1m0hllvmr5nkl4zy8yyzfgw9zmbrrzd5pw87ahd2mq68fjpcaqq5";
+  };
+
+  propagatedBuildInputs = [
+    future
+    kinparse
+    pyspice
+    graphviz
+  ];
+
+  # Checks require availability of the kicad symbol libraries.
+  doCheck = false;
+  pythonImportsCheck = [ "skidl" ];
+
+  meta = with lib; {
+    description = "Module that extends Python with the ability to design electronic circuits";
+    homepage = "https://xess.com/skidl/docs/_site/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ matthuszagh ];
+  };
+}