> Syntax and other errors in Haskell provided through VSCode Haskell extension via GHC are comically bad, IMO, often amounting to a small red squiggly that's not even where the actual error is, with the message "parse error". When I have put the code snippets into GPT-4, it has identified and corrected the issue 99% of the time

Wow, GPT-4 can correct whitespace errors in whitespace-sensitive languages? That's pretty astonishing.