{
  channelsNixosStable = {
    ref = "nixos-19.09";
    rev = "8731aaaf8b30888bc24994096db830993090d7c4";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "8130f3c1c2bb0e533b5e150c39911d6e61dcecc2";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "329102c47bd1c68f0acdf4feec64232202948c7a";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "release-19.09";
    rev = "0d1ca254d0f213a118459c5be8ae465018132f74";
  };
}