Hotreloading allows one to change the behavior of a program while it is running.
Unlike a plugin system it is strictly a dev tool.
Usually rust game devs limit their hotreloading to data files.
This is pretty useful already!
It lets one reload graphic assets, shaders, configuration files and even scripts without
restarting or recompiling.

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Hot-reloading in Rust allows changing program behavior while running without full restarts. This guide demonstrates splitting a Rust game into a host (persistent state) and worker (reloadable logic) using dynamic libraries. The worker compiles to both dylib and static library, communicating via trait objects. Key challenges include handling state persistence across reloads (solved via serialization), avoiding invalid function pointers from dynamic dispatch, and managing thread-local storage. The approach requires same compiler/flags for ABI compatibility, making it suitable for development but not production plugins. Includes practical tips on compile times, dependency management, and integration with game frameworks like macroquad.

I hotreload Rust and so can you