It seems to be only for GNU/Linux systems, what about all other OSs out there?
The good news is that you can integrate your language-specific tools with Nix as well, such as has been done for Haskell, node.js and other things. (I'm looking at it so that we can integrate our Dylan stuff with it.)
But the world of operating systems is so much bigger than the desktop under the desk.
Good work on Dylan by the way.
Maybe unikernels like OpenMirage will help make things interesting.
And thanks! The work on Dylan is a lot of fun and keeps me semi-sane by keeping me busy.