{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "1601f559e89ba71091faa26888711d4dd24c2d4d";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "7815c86c104a99417db844791dcda34fe7a7965f";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "aa2f3eb8b102ffed4258a7e7fbc0a7d17b7ba319";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "cf0aad391c10473fa7613dcc41b1f6a366d03148";
  };
}