let
  nixpkgs = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-20.09";
    rev = "51aaa3fa1b69559456f9bd4968bd5b179a784f67";
  };
in

{
  inherit nixpkgs;
  "channels-nixos-stable" = nixpkgs;
  "channels-nixos-20.03" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-20.03";
    rev = "ff6fda61600cc60404bab5cb6b18b8636785b7bc";
  };
  "channels-nixos-19.09" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-19.09";
    rev = "75f4ba05c63be3f147bcc2f7bd4ba1f029cedcb1";
  };
  "channels-nixos-unstable" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-unstable";
    rev = "24c9b05ac53e422f1af81a156f1fd58499eb27fb";
  };
  "nixpkgs-master" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "9b3e35d991ea6a43f256069dcb2e006006730d05";
  };
  "home-manager-module" = {
    url = "https://github.com/nix-community/home-manager";
    ref = "release-20.09";
    rev = "7339784e07217ed0232e08d1ea33b610c94657d8";
  };
}