extremely barebones error diagnostics for lang-dev
heres the code for the sample above. feel free to add coloring with your favorite coloring crate, or just use raw ansi sequences.
rust
use lerr::Error;
let out = Error::new("Strin::new()")
.label((0..5, "a 'strin' you say"))
.note("i think you meant String")
.to_string();
println!("{out}");
Please note that only one label per line is currently supported, and multiline labels are not yet supported. If that doesnt work for you, use something like ariadne.