Even on one example it's already really not great for haskell
| engine | time (milliseconds) |
|---|---|
| ron-rs | 93612 |
| ron-hs | 1147095 |
| aeson | 820941 |
Including aeson because the input is compatible. So it seems haskell is 10 times worse than rust even if it's not me writing the code.. And my code is 1/3 worse than that...