Personally I use a DigiRig with my G90. Laptop running WinLink Express<->VARA HF<->DigiRig<->Cables<->G90
I have heard of the X6100 running FT8 natively. I'm sure it could run some version of WinLink, but I'm not sure if it could do VARA specifically. Last I knew VARA (the modem itself) was Windows only.
If the X6100 uses x86, you could probably just use WINE. If it's something like ARM, you'd need WINE inside an emulator.
I imagine there's other options too, like packet/ARDOP/etc.
I have personally never done WinLink over VHF/UHF, although it is a goal of mine someday. (Doesn't help that the nearest VHF/UHF nodes to me presently are at least 30 miles away.)
Do you have any specific questions, I'd be happy to help anytime!
If you don't mind sharing, what know-how and equipment do you have in regards to Lemmy?
I like learning :)