error-handling

Package version eg. v9, v10:

github.com/go-playground/locales v0.13.0
github.com/go-playground/universal-translator v0.17.0
github.com/go-playground/validator/v10 v10.2.0

Issue, Question or Enhancement:

Golangci-lint (https://github.com/golangci/golangci-lint) comes with a errorlint linter (https://github.com/polyfloyd/go-errorlint). When I switched it on, I got this issue f

If a Snafu derive has accidentally been left in an enum definition, the error: Only struct-like and unit enum variants are supported error can be confusing, because it points only to the offending variant, not to the Snafu derive, and the message doesn't mention snafu at all.

Please consider making that error a little more specific; say:

error: Snafu supports only struct-like an

This case should just be passed directly to the parent handler

Allowing dynamic list of spans to provide highlights you can be good for using miette to wrap tools like TypeScript (tsc).

Looking at the source code, maybe Vec<SourceSpan> might not cut it, but introducing a new LabelledSourceSpan and allowing everything that is Into<Vec<LabelledSourceSpan>> could also make sense.

What do you think?