{
  description = "NixOS configuration for all hosts";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-25.05";
    flake-utils.url = "github:numtide/flake-utils";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, flake-utils, home-manager, ... }: 
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system;
        config.allowUnfree = true;
      };
    in
    {
      nixosConfigurations = {
        electra = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [
            {
              nixpkgs.config.allowUnfree = true;
            }
            ./hosts/electra/configuration.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.users.alisceon = import ./home/users/alisceon.nix;
              home-manager.backupFileExtension = "backup";
            }
          ];
        };
        tower = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [
            {
              nixpkgs.config.allowUnfree = true;
            }
            ./hosts/tower/configuration.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.users.alisceon = import ./home/users/alisceon.nix;
              home-manager.backupFileExtension = "backup";
            }
          ];
        };
      };
    };
}