Improve unresolved use error message "use of undeclared type or module `foo`" doesn't mention that it could be a crate. This error can happen when users forget to add a dependency to `Cargo.toml`, so I think it's important to mention that it could be a missing crate. I've used a heuristic based on Rust's naming conventions. It complains about an unknown type if the ident starts with an upper-case letter, and crate or module otherwise. It seems to work very well. The expanded error help covers both an unknown type and a missing crate case. |
||
|---|---|---|
| .. | ||
| auxiliary | ||
| multiple-opts.rs | ||
| multiple-opts.stderr | ||
| noprelude-and-prelude.rs | ||
| noprelude-resolves.rs | ||
| noprelude.rs | ||
| noprelude.stderr | ||
| public-and-private.rs | ||
| public-and-private.stderr | ||