Look into crosstool-NG integration

[kaushalmodi]

Ref: https://gitter.im/nim-lang/Nim?at=5bc0c190435c2a518e961a75

https://crosstool-ng.github.io/

leorize here:

actually, if you integrate crosstool-NG, you might be able to write a .nims that can spit out windows, mac,... binaries