file association for mac! associating file is done automatically when you move the app in your system but there is also a button to set it manually i had to disable argument parsing and to subclass qapplication to make this work please test

{-# LANGUAGE OverloadedStrings #-}
module Consts where

import qualified Data.ByteString.Char8 as B

serverVersion :: B.ByteString
serverVersion = "0"