let
  nixpkgs = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-21.11";
    rev = "64fc73bd74f04d3e10cb4e70e1c65b92337e76db";
  };
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 = "530a53dcbc9437363471167a5e4762c5fcfa34a1";
  };
  "channels-nixos-unstable" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-unstable";
    rev = "73ad5f9e147c0d2a2061f1d4bd91e05078dc0b58";
  };
  "nixpkgs-master" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "c91c73a714e34bb141e0ec7285783b9b34323e1c";
  };
  "home-manager-module" = {
    url = "https://github.com/nix-community/home-manager";
    ref = "release-21.11";
    rev = "a8d00f5c038cf7ec54e7dac9c57b171c1217f008";
  };
}