Honest question for the #rust developers out there. I've observed several pretty high profile OSS projects recently, which are written in rust but are *not* cross platform. Well at least as far as Unix is concerned, it's Linux or nothing.

This is super unfortunate, not only as a #BSD user it locks me out from using these tools...but it also introduces a pretty big blind spot in terms of development which can lead to fragile and/or insecure systems. The whole "monoculture is bad" thing.

So folks hacking on #rust - what do you feel is lacking that makes it easier to write portable code?