Adding a new built-in module or a new global value is considered as
the compatible change.
Moreover, in the real-world applications configs may be changed and reloaded, so they likely will be loaded using dofile() or loadfile() without require()'s caching.
The main reason of this change is that we're going to introduce a new built-in module
config. See https://github.com/tarantool/tarantool/issues/8724 for details.Introducing a new module in the global namespace is legal according to our compatibility rules. Quoted from https://github.com/orgs/tarantool/discussions/6182:
Moreover, in the real-world applications configs may be changed and reloaded, so they likely will be loaded using dofile() or loadfile() without require()'s caching.