preprocess::reorder panicked on rust 1.82.0

[echou]

What happened?

preprocess::reorder panicked on 1.82.0. (1.80.0 is ok).

See 1.81 new feature:
https://blog.rust-lang.org/2024/09/05/Rust-1.81.0.html#new-sort-implementations

PRQL input

from foo

filter true
sort {}
derive a = 1
derive b = 1

filter true

select {
  n1 = n1 + 1,
  n2 = n2 + 1,
  n3 = n3 + 1,
  n4 = n4 + 1,
  n5 = n5 + 1,
  n6 = n6 + 1,
  n7 = n7 + 1,
  n8 = n8 + 1,
  n9 = n9 + 1,
  n10 = n10 + 1,
  n11 = n11 + 1,
}
take 1
sort {}

SQL output

Message:  user-provided comparison function does not correctly implement a total order
Location: core/src/slice/sort/shared/smallsort.rs:860

Expected SQL output

No response

MVCE confirmation

• Minimal example
• New issue

Anything else?

No response

[max-sixty]

Thanks! I think we should be able to fix, I'll have a look.

[richb-hanover]

@max-sixty @echou Using PRQL compiler version:0.13.2-61-gd05b6bd8 (current main), I have a couple weird observations:

• commenting out any of the nX = nX+1 lines from the original query lets it compile
• Adding a few other assignments, then commenting out some, the query seems to compile as long as there are 10 or fewer assignments