I came across Nile for the first time in 2011
When Alan Kay presented his talk "Programming and Scaling" (https://www.youtube.com/watch?v=y9xLi0iJg1g best watch the whole talk!) The Idea to create an Approach that satisfies the users demands for personal computing in less than 10000 lines of Code, powered by DSL and other advanced concepts, seemed intriguing.
I searched the web and there was little to noting I found.
Later I found this talk in that at the end Dan Amelang also answers QA: https://www.youtube.com/watch?v=ubaX1Smg6pY.
The Problem with the STEPTS project is that you need all the parts together: Maru, Nile, Gezira etc..