
This option is defined in qemu-vm.nix, but that module is not always imported. http://hydra.nixos.org/build/44817443 (cherry picked from commit 03c55005dfd6fbcd5cf8e00128a3bb6336b3bc0f)
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.