{
    description = "Jon's NixOS configuration";
    
    inputs = {
        nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
        nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-23.11";
        
        home-manager = {
            url = "github:nix-community/home-manager";
            inputs.nixpkgs.follows = "nixpkgs";
        };

        nix-index-database.url = "github:Mic92/nix-index-database";
    };
    
    outputs = inputs @ {
        self,
        nixpkgs,
        nix-index-database,
        ...
    }: let
        system = "x86_64-linux";

        lib = nixpkgs.lib.extend (
            final: prev: {
                custom = import ./lib.nix nixpkgs.lib;
            }
        );

        pkgs = import nixpkgs {
            inherit system;
            config.allowUnfree = true;
            overlays = [ self.overlays.default ];
        };

    in {
        overlays.default = import ./overlay.nix {inherit inputs system;};

        nixosModules = 
            { nixosConfig = import ./.;}
            // lib.custom.mapModulesRec ./modules import;

        nixosConfigurations = let
            mkHost = system: path:
                lib.nixosSystem {
                    inherit system;
                    specialArgs = {inherit lib inputs system;};
                    modules = [
                        nix-index-database.nixosModules.nix-index
                    {
                        nixpkgs.pkgs = pkgs;
                        modules.device.name = lib.mkDefault (builtins.baseNameOf path);
                    }
                        ./.
                        (import path)
                    ];
                };
        in
            lib.custom.mapModules ./hosts (mkHost system);
    };
}