"Haskell never got the “killer framework” like Rails or Spark that allowed to become more mainstream" But why is that the case? Thinking about writing a "kill

"Haskell never got the “killer framework” like Rails or Spark that allowed to become more mainstream" But why is that the case? Thinking about writing a "killer framework" with huskell gives me a headache. Doing UI in huskell? Eventloop? Callbacks? Is that even possible, without doing awkward workarounds?