{
  description = "NixOS configuration";

  inputs = {
    nix.url = "github:NixOS/nix";
    nixpkgs.url = "nixpkgs/nixos-26.05";
    nixpkgs-unstable.url = "nixpkgs/nixos-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    nixos-hardware.url = "github:NixOS/nixos-hardware";
    nixos-generators = {
      url = "github:nix-community/nixos-generators";
      inputs.nixpkgs.follows = "nixpkgs";
    };

  };

  outputs =
    inputs@{ self, flake-parts, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } {

      imports = [
        ./machines/configuration.nix
      ];

      perSystem =
        {
          self',
          inputs',
          config,
          pkgs,
          system,
          ...
        }:
        {
          # make pkgs available to all `perSystem` functions
          _module.args.pkgs = import inputs.nixpkgs {
            inherit system;
          };
        };

      systems = [ "x86_64-linux" ];
    };
}