No module named 'visa'

[jgui]

I install lantz as described in README.md and get the following error when setting visa backend:

> pip install -U "lantzdev[full]"
> pip install pyvisa-py
> lantz config core.visa_backend @py
Traceback (most recent call last):
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\lib\runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\lib\runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\Scripts\lantz.exe\__main__.py", line 4, in <module>
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\lib\site-packages\lantz\__init__.py", line 7, in <module>
    from lantz.core import Driver, MessageBasedDriver
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\lib\site-packages\lantz\core\__init__.py", line 35, in <module>
    from .messagebased import MessageBasedDriver
  File "C:\Tools\WPy64-31040\python-3.10.4.amd64\lib\site-packages\lantz\core\messagebased.py", line 15, in <module>
    import visa
ModuleNotFoundError: No module named 'visa'

In python session I can import pyvisa but not visa:

>>> import visa
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'visa'
>>> import pyvisa
>>>
```