Because I live in embedded land, I use the compileOnly C output. What’s really nice about that though is with debugger:native enabled, it embeds source-map comments in the C back to the Nim lines they tie to! All in VSCode with gdb (and OpenOCD).

This gives me full interactive debugging, breakpoints etc of the Nim source directly — including via a JTAG from the ESP32 itself :) it’s super nice, considering none of the tools internally were built for Nim haha. The #Line macro is surprisingly powerful in C debugging land it turns out

If you’re doing desktop/non embedded stuff it’s even easier, and you can also enable useMalloc and run Nim programs through the Valgrind suite easily