{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "3574dbb9767a2af89d07aeee79cadbdeb0964f84";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "1222e289b5014d17884a8b1c99f220c5e3df0b14";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "95e36dfe74b8d161c28601e33646e2d636026f83";
  };
}