let
  nixpkgs = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-21.11";
    rev = "a640d8394f34714578f3e6335fc767d0755d78f9";
  };
in

{
  inherit nixpkgs;
  nixos = nixpkgs // {
    suffix = "/nixos";
  };
  "channels-nixos-stable" = nixpkgs;

  "channels-nixos-21.05" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-21.05";
    rev = "43cdc5b364511eabdcad9fde639777ffd9e5bab1";
  };
  "channels-nixos-unstable" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-unstable";
    rev = "6daa4a5c045d40e6eae60a3b6e427e8700f1c07f";
  };
  "nixpkgs-master" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "e65a0f3f980abdc802b9f93bdb1b67a326cdb9c8";
  };
  "home-manager-module" = {
    url = "https://github.com/nix-community/home-manager";
    ref = "release-21.11";
    rev = "6ce1d64073f48b9bc9425218803b1b607454c1e7";
  };
}