That blog post doesn’t make sense to me at all. The author is going from full modern Haskell (since he mentioned Servant and Beam, you could tell almost every file uses dozens of GHC extensions beyond what Haskell2010 gives you) to Python with dynamic types. He could instead rewrite the Haskell to use less modern type system features and get so much faster compilation speed.
Also GHC has an interpreter. It powers the REPL. No need to compile everything if you’re just experimenting. I do find that in the Haskell world the REPL is criminally underused compared to Python.
And the rest of your comment doesn’t make sense; this shop is rewriting their infra (not UI) from Haskell to Python.
Re:Claude Code uses Bun written in Rust now
by frollogaston on Sunday July 19, 2026 @07:01PM
(#48972473)
Python was faster to iterate on than Haskell even before LLMs
I suspect user facing/fast moving code (UX layer) will move to dynamic systems with fast iteration times. Infra layer will move towards safe systems level environments like Rust. I'm not sure where Java/C# lands in all of this - it's kind of the middle ground between these two worlds but the tradeoffs change drastically with LLMs - my gut feeling says that TS/Python is good enough for UX work and Rust is better for systems work so it gets less popular going forward.
[1] https://avi.press/posts/2026-07-10-after-7-years-in-producti...