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/pxml/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, pythonAtLeast
+, buildPythonPackage
+, fetchPypi
+, blessings
+, six
+, nose
+, coverage
+}:
+
+buildPythonPackage rec {
+  pname = "pxml";
+  version = "0.2.13";
+  disabled = pythonAtLeast "3.8";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0c9zzfv6ciyf9qm7556wil45xxgykg1cj8isp1b88gimwcb2hxg4";
+  };
+
+  propagatedBuildInputs = [ blessings six ];
+  checkInputs = [ nose coverage ];
+
+  # test_prefixedWhitespace fails due to a python3 StringIO issue requiring
+  # bytes rather than str
+  checkPhase = ''
+    nosetests -e 'test_prefixedWhitespace'
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/metagriffin/pxml";
+    description = ''A python library and command-line tool to "prettify" and colorize XML.'';
+    maintainers = with maintainers; [ glittershark ];
+    license = licenses.gpl3;
+  };
+}