https://pkg.go.dev/slices#Contains ?

Also, if error wrapping hurts you so much (I don't use it), just implement a project-specific error that works how you want. This could be something that is JSON serializable, that captures a line number at each return site, etc. It will take like 10 minutes to get your project's errors working exactly how you want.

My projects usually do -

    log.SetFlags(log.LstdFlags | log.Lshortfile)
    // ...
    if err != nil {
        log.Println(err)
        return errors.New("Error doing the thing.")
    }

That essentially logs a stack trace with line numbers up the whole error chain, each return adding the outer context. I only ever use errors.Is for os.ErrNotExist.