EEVEE
Nishita Sky, recently added to EEVEE. The goal for 2021 is to make EEVEE an option for production level rendering.
I tried it with my December 22 build and didn’t work, downloaded January 2 build, searched developer.blender.org, all accounts say this is still not true.
Nishita only works in Cycles and in Eevee it’s only a white texture.
thank you for reporting.