From what I can tell: 1. They have a REPL and Jupyter integration 2. They're planning to do C and C++ interop. This is achievable in Nim but it is a pain, i.e. there is not easy way to import/include a C header in Nim, e.g. nothing as straight-forward as @cImport("cheader.h") in Zig or #include "cheader.h" in C++; one must go through c2nim or a third-party library

(1) cannot be achieved without a custom linker or using a JIT such as LLVM or compiling to WASM and embedding a WASM runtime into the binary

I really hope Nim gets some language/compiler upgrades due to this.