{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "00322ccb73ed5d5204b7d9e4fad41573337f1470";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "1dc26c32edffdb73adb0a82b430834d3404aa8f3";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "2ef3b5200a419787604ca922be6fd4db69228489";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "29824a8cf6eabb32343a4af63d27ad6775c238ff";
  };
}