This module sends notification to slack.

{-# LANGUAGE OverloadedStrings #-}
import Network.Slack.Notifier

main = do
  let config = defaultConfig { webhookurl = "https://hooks.slack.com/services/your/slack/webhookurl"
                             , channel = Just "#general"
                             , username = Just "haskell"
                             }
   notify config "Hello, World"
   return ()