{
  channelsNixosStable = {
    ref = "nixos-20.03";
    rev = "ab3adfe1c769c22b6629e59ea0ef88ec8ee4563f";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "fce7562cf46727fdaf801b232116bc9ce0512049";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "d3dc37ac775a8853d345ef5b42604b28c63bc3d2";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "release-19.09";
    rev = "b78b5fa4a073dfcdabdf0deb9a8cfd56050113be";
  };
}