alt Hacker NewsIf you can lock down a test suite that ensures parity, then who cares what shape the lift ultimately looks like.
A full rewrite in different language that fails to be idiomatic is a step backward operationally, even if you stand to gain on issues the new language just eats for free
I like your fair-mindedness but for folks who are anti-LLM-anything, your argument is not the point.
Evidence: see the amount of nonsense in the postgres rewritten in Rust story - https://news.ycombinator.com/item?id=48841676 where there are two contradictory claims made:
"postgres is so stable I will never trust a rewrite."
"covering 100% of postgres regression suite doesn't guarantee you have replicated every behavior."
Folks who are okay with LLMs think the regression test suite is the spec and is the guarantee of stability. How else can it be? If you are depending on some behavior not covered in the regression tests, how do you know the next minor release won't break you?
Folks who are against seem to imagine a platonic ideal of PG which conveniently is the original PG implementation by tautological definition. So no rewrite can ever meet their bar.