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/pykrakenapi/default.nix

@@ -0,0 +1,40 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, krakenex
+, pandas
+}:
+
+buildPythonPackage rec {
+  pname = "pykrakenapi";
+  version = "0.3.1";
+
+  disabled = pythonOlder "3.3";
+
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "dominiktraxl";
+    repo = "pykrakenapi";
+    rev = "v${version}";
+    hash = "sha256-gG0kbB3yaFU4DcBKupnBS7UFuU1hIMThdUHCuqufKzc=";
+  };
+
+  propagatedBuildInputs = [
+    krakenex
+    pandas
+  ];
+
+  # tests require network connection
+  doCheck = false;
+
+  pythonImportsCheck = [ "pykrakenapi" ];
+
+  meta = with lib; {
+    description = "Python implementation of the Kraken API";
+    homepage = "https://github.com/dominiktraxl/pykrakenapi";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}