Tuple index access in lambda creates incorrect type

[ennisj9]

Zig compiler:

Minimum reproduction

app [main!] { pf: platform "https://github.com/lukewilliamboswell/roc-platform-template-zig/releases/download/0.6/2BfGn4M9uWJNhDVeMghGeXNVDFijMfPsmmVeo6M4QjKX.tar.zst" }

import pf.Stdout

first_of_tuple = |tup| tup.0

main! = |_args| {
    tup = ("first","last")
    Stdout.line!(first_of_tuple(tup))
    Ok({})
}

Result

-- TYPE MISMATCH ---------------------------------

The first argument being passed to this function has the wrong type:
  ┌─ main.roc:9:18
  │
9 │     Stdout.line!(first_of_tuple(tup))
  │                                 ^^^

This argument has the type:

    (Str, Str)

But first_of_tuple needs the first argument to be:

    (_field)

Found 1 error(s) and 0 warning(s) for main.roc.