Let's say you have an app in Mono .net implementation.
Now you want to create a setup - that targets multiple platforms(mac,linux, windows).
What would you use to create such setup? Are out there any oss projects?
Targeting only windows is easy - i would use WiX...
Well, IMHO, most Linux users would mock you outright / would feel offended if you tried to ask them to run a "setup program", as most of them always do what I like to call the three command install.
Now, I'm not sure about cross platform compatibility, but http://nsis.sourceforge.net/ (Nullsoft Install System) is my favourite.
Actually, come to think of it, the entire installer-setup program thing is pretty windows centric...