{ name = "nixpkgs"; epoch = 2019; description = "A collection of packages for the Nix package manager"; provides = flakes: let pkgs = import ./. { system = "x86_64-linux"; }; in { lib = (import ./lib) // { nixosSystem = import ./nixos/lib/eval-config.nix; }; builders = { inherit (pkgs) stdenv fetchurl; }; packages = { inherit (pkgs) hello nix fuse nlohmann_json boost firefox; }; legacyPackages = pkgs; }; }