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/python2-modules/markdown/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools
+, nose
+, pyyaml
+, pythonOlder
+, importlib-metadata
+}:
+
+buildPythonPackage rec {
+  pname = "Markdown";
+  version = "3.1.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2e50876bcdd74517e7b71f3e7a76102050edec255b3983403f1a63e7c8a41e7a";
+  };
+
+  propagatedBuildInputs = [
+    setuptools
+  ] ++ lib.optionals (pythonOlder "3.8") [
+    importlib-metadata
+  ];
+
+  checkInputs = [ nose pyyaml ];
+
+  meta = {
+    description = "A Python implementation of John Gruber's Markdown with Extension support";
+    homepage = "https://github.com/Python-Markdown/markdown";
+    license = lib.licenses.bsd3;
+  };
+}