Sigh. I meant that the zig authors did not make it a general pattern and just slapped on the DI pattern specifically for io, instead of generalising the abstraction so people can DI stuff.
it's a general pattern. Allocators use the exact sane vtable mechanism. It's not like first class or anything, but that's fine: its enough of a pain in the ass to set it up that you dont start doing BeanFactoryFactory everywhere
