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/codepy/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytools
+, appdirs
+, six
+, cgen
+}:
+
+buildPythonPackage rec {
+  pname = "codepy";
+  version = "2019.1";
+
+  src = fetchFromGitHub {
+    owner = "inducer";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-viMfB/nDrvDA/IGRZEX+yXylxbbmqbh/fgdYXBzK0zM=";
+  };
+
+  buildInputs = [ pytools six cgen ];
+  propagatedBuildInputs = [ appdirs ];
+
+  pythonImportsCheck = [ "codepy" ];
+
+  # Tests are broken
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/inducer/codepy";
+    description = "Generate and execute native code at run time, from Python";
+    license = licenses.mit;
+    maintainers = with maintainers; [ atila ];
+  };
+}