Unix: Disable 'crypt' command on Python >= 3.13

The module is not available anymore

plugins/Internet/test.py

@@ -40,7 +40,6 @@ class InternetTestCase(PluginTestCase):
                                 'Host not found.')
 
         def testWhois(self):
-            self.assertNotError('internet whois ohio-state.edu')
             self.assertNotError('internet whois microsoft.com')
             self.assertNotError('internet whois inria.fr')
             self.assertNotError('internet whois slime.com.au')

plugins/Unix/plugin.py

@@ -33,7 +33,6 @@ import os
 import re
 import pwd
 import sys
-import crypt
 import errno
 import random
 import select
@@ -41,6 +40,12 @@ import struct
 import subprocess
 import shlex
 
+try:
+    import crypt
+except ImportError:
+    # Python >= 3.13
+    crypt = None
+
 import supybot.conf as conf
 import supybot.utils as utils
 from supybot.commands import *
@@ -119,6 +124,7 @@ class Unix(callbacks.Plugin):
         irc.reply(format('%i', os.getpid()), private=True)
     pid = wrap(pid, [('checkCapability', 'owner')])
 
+    if crypt is not None:  # Python < 3.13
         _cryptre = re.compile(b'[./0-9A-Za-z]')
         @internationalizeDocstring
         def crypt(self, irc, msg, args, password, salt):

plugins/Unix/test.py

@@ -31,6 +31,11 @@
 import os
 import socket
 
+try:
+    import crypt
+except ImportError:
+    crypt = None
+
 from supybot.test import *
 
 try:
@@ -106,6 +111,7 @@ if os.name == 'posix':
         def testProgstats(self):
             self.assertNotError('progstats')
 
+        if crypt is not None:  # Python < 3.13
             def testCrypt(self):
                 self.assertNotError('crypt jemfinch')