ToME: the Tales of Maj'Eyal

Hi I used the the CHN Addons for ToME latest version is 1.0.0, and the link is http://te4.org/games/addons/tome/chn-addons-tome, but recently the game to upgrade to version 1.0.1, although the original author not update the plug-in, but manually set in the game, I normally use it. But the problem is...

I am very pleased to see that the game Login Greenlight, I very much hope it can so that I can play on Steam to it.I ask if I in desura already purchased this game, then I will get a Steam activation code it?Or do I need to re-purchase?