Avoid mixing import styles

relay.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 
 import nacl.utils
-from nacl.signing import SigningKey
-from nacl.public import PrivateKey, Box
+import nacl.signing
+import nacl.public
 
 import network
 import dirauth
@@ -15,8 +15,8 @@ class Relay(network.Server):
         self.dirauthaddrs = dirauthaddrs
 
         # Create the identity and onion keys
-        self.idkey = SigningKey.generate()
-        self.onionkey = PrivateKey.generate()
+        self.idkey = nacl.signing.SigningKey.generate()
+        self.onionkey = nacl.public.PrivateKey.generate()
 
         # Bind to the network to get a network address
         self.netaddr = network.thenetwork.bind(self)