let
  nixpkgs = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-21.05";
    rev = "0b8b127125e5271f5c8636680b6fe274844aaa9d";
  };
in

{
  inherit nixpkgs;
  nixos = nixpkgs // {
    suffix = "/nixos";
  };
  "channels-nixos-stable" = nixpkgs;
  "channels-nixos-unstable" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-unstable";
    rev = "1905f5f2e55e0db0bb6244cfe62cb6c0dbda391d";
  };
  "nixpkgs-master" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "2555e228676d6211bb53169a1974025b0df4e6a6";
  };
  "home-manager-module" = {
    url = "https://github.com/nix-community/home-manager";
    ref = "release-21.05";
    rev = "35a24648d155843a4d162de98c17b1afd5db51e4";
  };
}