does the IPCC ever recommend exact allocations of power production per country? It seems like their report on Mitigation Pathways suggests a really wide range for nuclear, with the high overshoot pathway having an upper-bound of 7x increase in nuclear generation, whereas 5x upper-bound for low overshoot.

I find this line pretty interesting cause it suggests that people may very well arbitrarily ignore nuclear: "There are large differences in nuclear power between models and across pathways (Kim et al., 2014; Rogelj et al., 2018). One of the reasons for this variation is that the future deployment of nuclear can be constrained by societal preferences assumed in narratives underlying the pathways (O’Neill et al., 2017; van Vuuren et al., 2017b)."