let
  nixpkgs = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-20.09";
    rev = "4a75ca4a4e7d14e7b0b0230b3ea57b5bd7c16218";
  };
in

{
  inherit nixpkgs;
  "channels-nixos-stable" = nixpkgs;
  "channels-nixos-20.03" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "nixos-20.03";
    rev = "929768261a3ede470eafb58d5b819e1a848aa8bf";
  };
  "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 = "d9dba88d08a9cdf483c3d45f0d7220cf97a4ce64";
  };
  "nixpkgs-master" = {
    url = "https://github.com/NixOS/nixpkgs/";
    ref = "master";
    rev = "479867700baa7ced259c979a0f724915c4d46d12";
  };
  "home-manager-module" = {
    url = "https://github.com/nix-community/home-manager";
    ref = "release-20.09";
    rev = "22f6736e628958f05222ddaadd7df7818fe8f59d";
  };
}