Done in Microsoft Windows. Hackers who believe in freedom and sharing probably want to move to Linux or a BSD (or some more exotic open source platform) if they haven't already.
Ubuntu: 0.89% market share
No volunteer is going to put in the effort to support Ubuntu especially when the other ~5% of linux users would complain that you aren't supporting their even less used linux variant. They would then do a crappy job of adding support for their distribution and absolutely none of it would work.