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/emailthreads/default.nix

@@ -0,0 +1,29 @@
+{ lib, fetchFromGitHub, buildPythonPackage
+, python, isPy3k }:
+
+buildPythonPackage rec {
+  pname = "emailthreads";
+  version = "0.1.3";
+  disabled = !isPy3k;
+
+  # pypi is missing files for tests
+  src = fetchFromGitHub {
+    owner = "emersion";
+    repo = "python-emailthreads";
+    rev = "v${version}";
+    sha256 = "sha256-7BhYS1DQCW9QpG31asPCq5qPyJy+WW2onZpvEHhwQCs=";
+  };
+
+  PKGVER = version;
+
+  checkPhase = ''
+    ${python.interpreter} -m unittest discover test
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/emersion/python-emailthreads";
+    description = "Python library to parse and format email threads";
+    license = licenses.mit;
+    maintainers = with maintainers; [ eadwu ];
+  };
+}