{
  channelsNixosStable = {
    ref = "nixos-18.09";
    rev = "c2950341d038995bf46a7b72db961bb3d3e9ac12";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "eebd1a9263716a04689a37b6537e50801d376b5e";
  };
}