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/plyvel/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pkgs
+, pytest
+, isPy3k
+}:
+
+buildPythonPackage rec {
+  pname = "plyvel";
+  version = "1.4.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "4ea98bea04ebf0f44747bacdfafefc8827787106fbb787f0aedc46482b2dfd53";
+  };
+
+  buildInputs = [ pkgs.leveldb ] ++ lib.optional isPy3k pytest;
+
+  # no tests for python2
+  doCheck = isPy3k;
+
+  meta = with lib; {
+    description = "Fast and feature-rich Python interface to LevelDB";
+    platforms = platforms.unix;
+    homepage = "https://github.com/wbolster/plyvel";
+    license = licenses.bsd3;
+  };
+}