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/magic-wormhole-mailbox-server/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, six
+, attrs
+, twisted
+, pyopenssl
+, service-identity
+, autobahn
+, treq
+, mock
+}:
+
+buildPythonPackage rec {
+  version = "0.4.1";
+  pname = "magic-wormhole-mailbox-server";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1af10592909caaf519c00e706eac842c5e77f8d4356215fe9c61c7b2258a88fb";
+  };
+
+  propagatedBuildInputs = [
+    attrs
+    six
+    twisted
+    autobahn
+  ] ++ autobahn.optional-dependencies.twisted
+  ++ twisted.optional-dependencies.tls;
+
+  checkInputs = [
+    treq
+    mock
+    twisted
+  ];
+  checkPhase = ''
+    trial -j$NIX_BUILD_CORES wormhole_mailbox_server
+  '';
+
+  meta = with lib; {
+    description = "Securely transfer data between computers";
+    homepage = "https://github.com/warner/magic-wormhole-mailbox-server";
+    license = licenses.mit;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}