[ER] Better than the "unresolved import `super::K`" error message

Code

For wrong code like this:


fn foo() {
    const K: usize = 1;

    mod inner {
        use super::K;

        fn bar() {
            dbg!(K);
        }
    }
}
fn main() {}

Current output

rustc 1.88.0-nightly (25cdf1f67 2025-04-28) currently gives:


error[E0432]: unresolved import `super::K`
 --> ...\test.rs:5:13
  |
5 |         use super::K;
  |             ^^^^^^^^ no `K` in the root

error: aborting due to 1 previous error

Desired output

But I'd like an error message that tries to suggest how to correctly import the name X.

Rationale and extra context

No response

Other cases

Rust Version

rustc 1.88.0-nightly (25cdf1f67 2025-04-28)
binary: rustc
commit-hash: 25cdf1f67463c9365d8d83778c933ec7480e940b
commit-date: 2025-04-28
host: x86_64-pc-windows-gnu
release: 1.88.0-nightly
LLVM version: 20.1.2

Anything else?

No response

Reproduce the example with the reported rustc 1.88.0-nightly version and inspect how the unresolved import diagnostic is produced. Determine the correct import guidance for this nested-module case; done means the compiler suggests how to import the name rather than only reporting that super::K is unresolved.