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/acme/default.nix

@@ -0,0 +1,35 @@
+{ buildPythonPackage
+, certbot
+, cryptography
+, pyasn1
+, pyopenssl
+, pyRFC3339
+, josepy
+, pytz
+, requests
+, requests-toolbelt
+, six
+, werkzeug
+, ndg-httpsclient
+}:
+
+buildPythonPackage rec {
+  inherit (certbot) src version;
+
+  pname = "acme";
+
+  propagatedBuildInputs = [
+    cryptography pyasn1 pyopenssl pyRFC3339 pytz requests requests-toolbelt six
+    werkzeug ndg-httpsclient josepy
+  ];
+
+  # does not contain any tests
+  doCheck = false;
+  pythonImportsCheck = [ "acme" ];
+
+  sourceRoot = "source/${pname}";
+
+  meta = certbot.meta // {
+    description = "ACME protocol implementation in Python";
+  };
+}