Solar power or nuclear power?

I have to say, I am biased towards lunar manufactured solar-PV systems.
Creating the power supply out local materials has a certain elegance of
design. The question is whether or not it can compete with imported solar
or imported nuclear power sources. I think that the original NASA studies concluded that locally produced solar cells could not compete with imported solar arrays in the initial days of the program. At the initial stages, no manufacturing on the lunar surface whatsoever was assumed. But past a certain point, when it was time to expand the facilities on the moon, only then was local manufacturing from native materials suggested; chiefly of mass driver components, and presumably their PV power supplies as well. On the other hand, David Criswell and some others seem to think that manufacturing of at least low-grade PV cells on the moon should be a snap. In the original space manufacturing studies, I know that in the early days there was that buried nuke you mentioned. Then past a certain point it was gone, and there were only solar arrays. I think by that point it was assumed the mass-driver would only be operational during the lunar day. Whether the elimination of the nuke was simply an acknowledgement of the political difficulties in launching it, or due to some trade-off analysis, I can't say.