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/pysftp/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, isPyPy
+, paramiko
+}:
+
+buildPythonPackage rec {
+  pname = "pysftp";
+  version = "0.2.9";
+  disabled = isPyPy;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0jl5qix5cxzrv4lb8rfpjkpcghbkacnxkb006ikn7mkl5s05mxgv";
+  };
+
+  propagatedBuildInputs = [ paramiko ];
+
+  meta = with lib; {
+    homepage = "https://bitbucket.org/dundeemt/pysftp";
+    description = "A friendly face on SFTP";
+    license = licenses.mit;
+    longDescription = ''
+      A simple interface to SFTP. The module offers high level abstractions
+      and task based routines to handle your SFTP needs. Checkout the Cook
+      Book, in the docs, to see what pysftp can do for you.
+    '';
+  };
+
+}