{
  description = "NixOS config with modules, host overrides, and Home Manager";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-25.05";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    home-manager.url = "github:nix-community/home-manager/release-25.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    nix-alien.url = "github:thiagokokada/nix-alien";

    nix-ld.url = "github:Mic92/nix-ld";
    # this line assume that you also have nixpkgs as an input
    nix-ld.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = { self, nixpkgs, nixpkgs-unstable, home-manager, nix-ld, ... }:
  let
    system = "x86_64-linux"; # or aarch64-linux
    pkgs = import nixpkgs { inherit system; };
  in
  {
    nixosConfigurations = {
      dev-vm = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        specialArgs = {
          inherit home-manager;
        };
        modules = [
          ./common.nix
          ./hosts/dev-vm/default.nix
        ];
      };

      alex-laptop = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        specialArgs = {
          inherit home-manager;
        };
        modules = [
          ./system/common.nix
          ./hosts/alex-laptop/default.nix
        ];
      };

      alex-desktop = nixpkgs.lib.nixosSystem {
        specialArgs = {
          inherit self system;
        };
        modules = [
          ./system/common.nix
          ./hosts/alex-desktop/default.nix
          home-manager.nixosModules.home-manager
	  #nix-ld.nixosModules.nix-ld
	  # The module in this repository defines a new module under (programs.nix-ld.dev) instead of (programs.nix-ld)
        # to not collide with the nixpkgs version.
          #{ programs.nix-ld.dev.enable = true; }
        ];
      };
    };
  };
}