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/pycodestyle/default.nix

@@ -0,0 +1,34 @@
+{ buildPythonPackage
+, fetchPypi
+, lib
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "pycodestyle";
+  version = "2.8.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0zxyrg8029lzjhima6l5nk6y0z6lm5wfp9qchz3s33j3xx3mipgd";
+  };
+
+  dontUseSetuptoolsCheck = true;
+
+  # https://github.com/PyCQA/pycodestyle/blob/2.5.0/tox.ini#L14
+  checkPhase = ''
+    ${python.interpreter} pycodestyle.py --max-doc-length=72 --testsuite testsuite
+    ${python.interpreter} pycodestyle.py --statistics pycodestyle.py
+    ${python.interpreter} pycodestyle.py --max-doc-length=72 --doctest
+    ${python.interpreter} -m unittest discover testsuite -vv
+  '';
+
+  meta = with lib; {
+    description = "Python style guide checker (formerly called pep8)";
+    homepage = "https://pycodestyle.readthedocs.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [
+      kamadorueda
+    ];
+  };
+}