There are some bugs in file "archinstall/lib/plugins.py" and "archinstall/init.py".

First problem

If I add --plugin https://raw.githubusercontent.com/phisch/archinstall-aur/master/archinstall-aur.py in archinstall command, this error appears:

Loading plugin from url ParseResult(scheme='https', netloc='raw.githubusercontent.com', path='/phisch/archinstall-aur/refs/heads/master/archinstall-aur.py', params='', query='', fragment='')
Traceback (most recent call last):
  File "/home/archi/MyArchIso/install.py", line 3, in <module>
    from my_global_menu import Menu
  File "/home/archi/MyArchIso/my_global_menu.py", line 1, in <module>
    from archinstall.lib.global_menu import GlobalMenu
  File "/usr/lib/python3.12/site-packages/archinstall/__init__.py", line 282, in <module>
    post_process_arguments(arguments)
  File "/usr/lib/python3.12/site-packages/archinstall/__init__.py", line 275, in post_process_arguments
    load_plugin(path)
  File "/usr/lib/python3.12/site-packages/archinstall/lib/plugins.py", line 95, in load_plugin
    localized = _localize_path(path)
                ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/archinstall/lib/plugins.py", line 38, in _localize_path
    converted_path = Path(f'/tmp/{path.stem}_{hashlib.md5(os.urandom(12)).hexdigest()}.py')
                                  ^^^^^^^^^
AttributeError: 'str' object has no attribute 'stem'

Seems that the problem is in function post_process_arguments in file archinstall/__init__.py. This function passes a string to the function load_plugin instead of a 'Path' object. I changed line 276 to path = Path(args['plugin']) and the problem was solved.

#Second Problem # At this point new problem came out:

Loading plugin from url ParseResult(scheme='https', netloc='', path='/raw.githubusercontent.com/phisch/archinstall-aur/refs/heads/master/archinstall-aur.py', params='', query='', fragment='')
Traceback (most recent call last):
  File "/home/archi/MyArchIso/install.py", line 3, in <module>
    from my_global_menu import Menu
  File "/home/archi/MyArchIso/my_global_menu.py", line 1, in <module>
    from archinstall.lib.global_menu import GlobalMenu
  File "/usr/lib/python3.12/site-packages/archinstall/__init__.py", line 282, in <module>
    post_process_arguments(arguments)
  File "/usr/lib/python3.12/site-packages/archinstall/__init__.py", line 275, in post_process_arguments
    load_plugin(path)
  File "/usr/lib/python3.12/site-packages/archinstall/lib/plugins.py", line 95, in load_plugin
    localized = _localize_path(path)
                ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/archinstall/lib/plugins.py", line 41, in _localize_path
    temp_file.write(urllib.request.urlopen(url.geturl()).read().decode('utf-8'))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 215, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 512, in open
    req = meth(req)
          ^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 1268, in do_request_
    raise URLError('no host given')
urllib.error.URLError: <urlopen error no host given>

The problem seems localized in funcion _localize_path in file archinstall/lib/plugins.py, where funcion url.geturl() return "https:///raw.githubusercontent.com/phisch/archinstall-aur/master/archinstall-aur.py" (there are 3 backslash after "https:").