How to import libs module in different files - module

Question

I have troubles resolving my module imports. Here is my file structure:
.
|-- scenes
| |-- libs
| | |-- mod.rs
| | `-- components.rs
| |-- mod.rs
| `-- scene.rs
`-- main.rs
I can't import the module libs in scene.rs. I think I don't get it the module logical. Any help would be very appreciable.
if I try to do mod libs; in scene.rs
error[E0583]: file not found for module `libs`
--> src/scenes/scene.rs:2:5
|
2 | mod libs;
| ^^^^
|
= help: name the file either scene/libs.rs or scene/libs/mod.rs inside the directory "src/scenes"
Contents files:
main.rs
mod scenes;
let sc = scenes::scene::Scene{};
scenes/scene.rs
mod libs; // errors
pub struct Sphere {
pub center: libs::components::Point
}
pub struct Scene {}
scenes/mod.rs
pub mod scene;
pub mod libs;
scenes/libs/components.rs
pub struct Point {}
scenes/libs/mod.rs
pub mod components;

Answer 1

Instead of mod libs, write use crate::scenes::libs.
The Rust 2018 Edition has changed the module system slightly to help clarify situations such as this.
Your directory should be restructured like so:
main.rs
scenes.rs
scenes
| libs.rs
| libs
| | components.rs
| scene.rs
The main difference here is that mod.rs files are now extracted from their folder and named appropriately.
PRE-RUST-2018 - NOV 2018
Instead of mod libs, write use scenes::libs.
The error message is telling you is you're trying to declare the existence of a submodule of scene that does not exist. Instead, you want to import (with use) the libs module which is accessed by scenes::libs from the crate root.