{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "cf3e277dd0bd710af0df667e9364f4bd80c72713";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "dfd8f84aef129f1978e446b5d45ef05cd4421821";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "58c473985c14801d4c3cf36fa8d2b3ef9020b709";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "ba0375bf06e0e0c3b2377edf913b7fddfd5a0b40";
  };
}