{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    home-manager.url = "github:nix-community/home-manager";
    nix-doom-emacs.url = "github:nix-community/nix-doom-emacs";
  };

  outputs = inputs @ { self, home-manager, nixpkgs, nixpkgs-unstable, ... }:
    let
      inherit (lib.my) mapModules mapModulesRec mapHosts;

      system = "x86_64-linux";

      mkPkgs = pkgs: extraOverlays: import pkgs {
        inherit system;
        config.allowUnfreePredicate = pkg: builtins.elem (pkgs.lib.getName pkg) [
          "corefonts"
          "steam"
          "steam-original"
          "steam-run"
        ];
        overlays = extraOverlays ++ (pkgs.lib.attrValues self.overlays);
      };
      pkgs = mkPkgs nixpkgs [ self.overlay ];
      pkgs-unstable = mkPkgs nixpkgs-unstable [ ];

      lib = nixpkgs.lib.extend
        (self: super: { my = import ./lib { inherit pkgs inputs; lib = self; }; });
    in
    {
      lib = lib.my;

      overlay = final: prev: {
        unstable = pkgs-unstable;
      };

      overlays = { my = (import ./overlay.nix); };

      nixosConfigurations = mapHosts ./hosts { };

    };
}