On a Mac, to build Tangled's VM with Nix, you first have to set up a Linux builder for Nix. With the help of @winter, I was able to do so in the way described here. It would be helpful to develop easier ways to do it, but this is the easiest one I know at the moment. Signed-off-by: Ilya Grigoriev <ilyagr@users.noreply.github.com>