catch subprocess err in 3.9.x (dirty hack

* is is_alive in sneakernet observer

scripts/disable-dev-config.py

@@ -18,8 +18,8 @@ conf['general']['display_header'] = True
 conf['general']['security_level'] = 0
 conf['general']['use_bootstrap_list'] = True
 conf['onboarding']['done'] = False
-conf['general']['minimum_block_pow'] = 6
+conf['general']['minimum_block_pow'] = 5
-conf['general']['minimum_send_pow'] = 6
+conf['general']['minimum_send_pow'] = 5
 conf['log']['file']['remove_on_exit'] = True
 conf['transports']['lan'] = True
 conf['transports']['tor'] = True

src/onionrproofs/subprocesspow.py

@@ -91,10 +91,17 @@ class SubprocessPOW:
     def _spawn_proc(self):
         """Create a child proof of work process
         wait for data and send shutdown signal when its found"""
+        # The importerror started happening in 3.9.x
+        # not worth fixing because this POW will be replaced by VDF
+        try:
             parent_conn, child_conn = Pipe()
             p = Process(target=self.do_pow, args=(child_conn,), daemon=True)
             p.start()
-        #p.join()
+        except ImportError:
+            logger.error(
+                "Error in subprocess module when getting new POW " +
+                "pipe.\nThis is related to a problem in 3.9.x", terminal=True)
+            return
         payload = None
         try:
             while True:

src/sneakernet/__init__.py

@@ -63,6 +63,6 @@ def sneakernet_import_thread():
     for path in watch_paths:
         observer.schedule(_Importer(), path, recursive=True)
     observer.start()
-    while observer.isAlive():
+    while observer.is_alive():
         # call import func with timeout
         observer.join(60)

tests/test_default_config_json.py

@@ -30,8 +30,8 @@ class OnionrConfig(unittest.TestCase):
             self.assertEqual(conf['general']['ephemeral_tunnels'], False)
             self.assertEqual(conf['general']['hide_created_blocks'], True)
             self.assertEqual(conf['general']['insert_deniable_blocks'], True)
-            self.assertEqual(conf['general']['minimum_block_pow'], 6)
+            self.assertEqual(conf['general']['minimum_block_pow'], 5)
-            self.assertEqual(conf['general']['minimum_send_pow'], 6)
+            self.assertEqual(conf['general']['minimum_send_pow'], 5)
             self.assertEqual(conf['general']['public_key'], '')
             self.assertEqual(conf['general']['random_bind_ip'], True)
             self.assertEqual(conf['general']['security_level'], 0)