{
  channelsNixosStable = {
    ref = "nixos-19.03";
    rev = "5c52b25283a6cccca443ffb7a358de6fe14b4a81";
  };
  channelsNixosUnstable = {
    ref = "nixos-unstable";
    rev = "acbdaa569f4ee387386ebe1b9e60b9f95b4ab21b";
  };
  nixpkgsMaster = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "78d5ba39c0c62bf1cf53235ebdaa67c6c5b6469c";
  };
  homeManagerModule = {
    url = "https://github.com/rycee/home-manager";
    ref = "master";
    rev = "30a16e3a87d509735731706379dce9c0223fe5b9";
  };
}