Nuclear works fine with renewables. Use nuclear for the minimum demand level, since it's cheaper than batteries per kWh. Build enough solar on top to cover the extra demand during the day. For remaining discrepancies with demand, build the cheapest combination of storage, excess production, and load-following by nuclear (which is perfectly capable of that with modern reactors). Wind adds some randomization but on the other hand it's less likely to go down all at once over a whole continent, so probably doesn't hurt if the grid is large enough.

This assumes your goal is to meet energy demands reliably with clean power at the lowest possible overall system cost. If instead your goal is to maximize wind/solar no matter what, then of course nuclear doesn't fit in.