What I think the other user is getting at is that Chisel isn't a "synthesizable subset" of Scala. You can use any Scala you want as Chisel is just a library.

What I think the other user is getting at is that Chisel isn't a "synthesizable subset" of Scala. You can use any Scala you want as Chisel is just a library. The model isn't a subset of Scala that can be turned into a netlist with the right compiler, but of a library for metaprogramming netlist graphs.