{
  description = "my nixos setup";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    home-manager.url = "github:nix-community/home-manager/master";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = { nixpkgs, home-manager, ... }:
  let
    system = "x86_64-linux";
    
    pkgs = import nixpkgs {
      inherit system;
      config = { allowUnfree = true; };
    };
    
    lib = nixpkgs.lib;

  in {
    homeManagerConfigurations = {
      vincent = home-manager.lib.homeManagerConfiguration {
        inherit system pkgs;
       username = "vincent";
        homeDirectory = "/home/vincent";
        configuration = {
          import = [
            ./users/vincent/home.nix
          ];
        };
      };
    };
    nixosConfigurations = {
      vincents-hp = lib.nixosSystem {
        inherit system;
        modules = [
          ./system/vincents-hp/configuration.nix
        ];
      };
      test-dell = lib.nixosSystem {
        inherit system;
        modules = [
          ./system/test-dell/configuration.nix
        ];
      };
      nixos-vm = lib.nixosSystem {
        inherit system;
        modules = [
          ./system/vm/configuration.nix
        ];
      };
    };
  };
}