{
  description = "Lavitz Configuration";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    subtui.url = "github:MattiaPun/SubTUI"; # <-- new

    home-manager = {
      url = "github:nix-community/home-manager/release-25.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      nixpkgs-unstable,
      home-manager,
      subtui,
      ...
    }@inputs:
    let
      settings = import ./settings.nix;
      system = "x86_64-linux";
      overlay-unstable = final: prev: {
        unstable = import nixpkgs-unstable {
          inherit system;
          config.allowUnfree = true;
        };

        subtui = subtui.packages.${system}.default;
      };
    in
    {
      nixosConfigurations."${settings.hostname}" = nixpkgs.lib.nixosSystem {
        inherit system;
        specialArgs = { inherit inputs; };
        modules = [
          (
            { ... }:
            {
              nixpkgs.overlays = [ overlay-unstable ];
            }
          )
          ./configuration.nix
          home-manager.nixosModules.home-manager
        ];
      };
    };
}