Detect available configs fails for vector on Windows 11

[j-c-cook]

Describe the bug

The vxlapi DLL does not appear to be installed using the current XL Driver Library (v23.20.2) installer for Windows 11. I've searched both C:\Windows\SysWOW64 and C:\Windows\System32 for the xlvapi DLL. I've installed many more device drivers than the VN1630A to see if the vxlapi DLL would show up. The VN1630A mounts to CANalyzer just fine. I'm thinking this issue may be on Vector's end, but I'm not sure how to escalate the issue if that is the case.

To Reproduce

import can

available_interfaces = can.detect_available_configs(
        interfaces=['vector']
    )
print(available_interfaces)

Output:

Could not import vxlapi: Could not find module 'vxlapi64' (or one of its dependencies). Try using the full path with constructor syntax.
[]

Additional context

OS and version: Windows 11 22H2
Python version: 3.9.18
python-can version: 4.3.1
python-can interface/s (if applicable): vector

[zariiii9003]

I do have the vxlapi64.dll in my C:\Windows\System32 directory and the vxlapi.dll in C:\Windows\SysWOW64. But i don't if they were put there by the Vector Driver Setup, the XL Driver Library or even by CANape. 🤷‍♂️

Anyhow, i recently pushed a change to use ctypes.util.find_library to find the dll, maybe that helps. (#1731)
Otherwise you'd have to manually copy the DLL somewhere on system path.

[j-c-cook]

I just went and grabbed the vxlapi files from a Windows 10 boot and copied them into their respective locations. I can now use my VN1630 as long as CANalyzer has the bus mounted.

#1731 is in main, and I have tested that for you.

pip uninstall python-can
pip install git+https://github.com/hardbyte/python-can.git@main

Both the v4.3.1 release and main work as long as vxlapi is available. I think the missing files resulted in an oversight on Vector's side of things. I'll hope someone who knows a dev there sees this message chain.