It is nice to see enthusiasts working on porting the open source MeeGo OS. And for those of you who want to give it a run on your Nexus S, check out the instructions at the source below. Be warned, however, that “if you've never built a MeeGo rootfs before, it's relatively straightforward, and all the binaries are precompiled for you (but it's definitely for developers only),” as Smith put it. Well, without a functional touchscreen, we would only advice this to the most curious of developers!
source: XDA Developers via Android Community