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/httptools/default.nix

@@ -0,0 +1,28 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "httptools";
+  version = "0.4.0";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-LJqTDDeLPRXWtpX7levP+BpzlbT5d1xPEKB2vrCywf8=";
+  };
+
+  # tests are not included in pypi tarball
+  doCheck = false;
+
+  pythonImportsCheck = [ "httptools" ];
+
+  meta = with lib; {
+    description = "A collection of framework independent HTTP protocol utils";
+    homepage = "https://github.com/MagicStack/httptools";
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}