[Pre-RFC]: Unnamed struct types

[mcpherrinm]

Here's the issue where they removed in the first place.

Remove structural records

And some more recent discussion on the topic

Why were structural records removed?

They had three usability problems: The fields had to be in the exact same order every time you constructed an instance of the record. This is because the compiler needed a canonical ordering. They could not be recursive without the compiler doing fancy typechecking (coinductive IIRC), which was felt to be not worth the effort. Field-level privacy can’t work with them.