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/py_scrypt/default.nix

@@ -0,0 +1,25 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, openssl
+}:
+
+buildPythonPackage rec {
+  pname = "scrypt";
+  version = "0.8.20";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-DSJsHGdE+y4wizkUEGabHfXP6CY3/8te1Im/grLS63g=";
+  };
+
+  buildInputs = [ openssl ];
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Bindings for scrypt key derivation function library";
+    homepage = "https://pypi.python.org/pypi/scrypt";
+    maintainers = [];
+    license = licenses.bsd2;
+  };
+}