Be more helpful on Permission error

stechuhr_client/config.py

 #!/usr/bin/env python 
 #-*- coding: utf-8 -*-
 
-import os, sys, ast
+import os, sys, ast, getpass
 import toml
 from pathlib import Path
 
@@ -75,8 +75,13 @@ def initialize_config(application_name: str, default_config: str) -> dict:
 
     # Create the config_dir if it doesn't exist
     if not Path.is_dir(Path(config_dir)):
+        try:
             Path(config_dir).mkdir(parents=True, exist_ok=True)
             print("Config directory didn't exist, created directory: {}".format(config_dir))
+        except PermissionError as e:
+            print("Error: Not sufficient permissions to create config directory at {} (Running {} as user {})".format(config_dir, application_name, getpass.getuser()), file=sys.stderr)
+            print("Consider creating {} manually with write permissions for {}. After initial write of default config.toml on the first run {} won't write that file ever again".format(config_dir, getpass.getuser(), application_name), file=sys.stderr)
+            exit(1)
 
     # Create a default config if it does exist
     if not Path.is_file(Path(config_path)):