{
  channelsNixosStable = {
    ref = "nixos-19.09";
    rev = "3a1861fcabcdf08a0c369e49b48675242ceb3aa2";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "3140fa89c51233397f496f49014f6b23216667c2";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "2ac6f1e3524b310bf94eba6ace6f9a75c9835dec";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "621c98f15a31e7f0c1389f69aaacd0ac267ce29e";
  };
}