{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "23fd1394dc6bef03a2ff010278a24403a97f0647";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "07b42ccf2de451342982b550657636d891c4ba35";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "f77d6b7a2d8e404a9ad125ea2409af7f6e4b7fbc";
  };
}