raise special exception for dangling links

electrum

@@ -353,6 +353,7 @@ if __name__ == '__main__':
             sys.exit(1)
         config_options['url'] = uri
 
+    # todo: defer this to gui
     config = SimpleConfig(config_options)
     cmdname = config.get('cmd')
 

lib/simple_config.py

@@ -161,6 +161,8 @@ class SimpleConfig(PrintError):
         # default path
         dirpath = os.path.join(self.path, "wallets")
         if not os.path.exists(dirpath):
+            if os.path.islink(dirpath):
+                raise BaseException('Dangling link: ' + dirpath)
             os.mkdir(dirpath)
 
         new_path = os.path.join(self.path, "wallets", "default_wallet")