Hey guys, are there any documentation on how to import the pdk to Cadence Virtuoso? Is it possible to do that?

The biggest challenge of this will be the PCell, which needs manual implementation with SKILL language. So the answer is yes you can do it but it is going to take a long long long time for it to work just by one person. I think however it is possible to use spectre rather than ngspice, which needs a converter to convert ngspice netlist to spectre format.