No way to create a `record` of user-provided type on a user-provided heap?

[inducer]

In a way, this is a question masquerading as an issue; if that's considered inappropriate, feel free to close without comment. (Though I could not find another way to get in touch.)

I am trying to create a record of a type that lives in a FrozenModule, from rust code, and I would like the resulting object to live on a Heap I provide. I was not able to figure out how to do that:

• RecordType lives in starlark::values::types, which is private.
• I can get the record type as a Value, but if I'd like to call it, I need an evaluator. If I make a fresh one, then the resulting record lives in the wrong Heap.

Thanks for taking a look!

x-ref: inducer/starlark-pyo3#46