It made no mention of that. I would have bought it otherwise. I had it wrapped myself but if they did a better job and had versions available I would have bought it. Just because they have a humble weekly sale or bundle doesn't automatically guarantee a Mac or Linux version. They didn't even have a breakdown on who purchased the most by platform so if it was available for those that was the best kept secret in the industry.
http://indiegamebundle.wikia.com/wiki/The_Humble_Weekly_Sale:_Alan_Wake Says it did not support it. So some people might have wrapped them like I did with Wine. That does not count as supporting those platforms. It's easy to think of a wrapper like an emulator since it makes a game from one platform run on another. But they had nothing to do with that and didn't offer it with the bundle.
There was also a Humble THQ sale and that was windows only as well at one point.
An alternative to use other controllers like that is to use x360ce.
https://code.google.com/p/x360ce/