Absolutely yes. The default GC (not ARC/ORC) is not stop-the-world. "Nim's memory management is deterministic and customizable with destructors and move semant

Absolutely yes. The default GC (not ARC/ORC) is not stop-the-world. "Nim's memory management is deterministic and customizable with destructors and move semantics, inspired by C++ and Rust. It is well-suited for embedded, hard-realtime systems."