{
  description = "NixOS configuration with Home Manager";
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/23.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    apple-silicon = {
      url = "github:tpwrules/nixos-apple-silicon";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };
    home-manager = {
      url = "github:nix-community/home-manager/release-23.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    home-manager-unstable = {
      url = "github:nix-community/home-manager"; #/release-23.11";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };
    emacs-config = {
      url = "git+https://git.marq42.xyz/mir/emacs?ref=main";
      flake = false;
    };
  };
  outputs = inputs@{ 
	      self, 
	      nixpkgs,
	      nixpkgs-unstable,
	      home-manager,
	      ... }: {
    nixosConfigurations = {
      galvatron = nixpkgs.lib.nixosSystem {
	system = "aarch64-linux";
	# specialArgs = { inherit nixpkgs-unstable; };
        modules = [
	  ./configuration.nix {
  	    # nixpkgs.overlays = [ inputs.apple-silicon.overlays.apple-silicon-overlay ];
	    hardware.asahi = {
	      peripheralFirmwareDirectory = ./galvatron/firmware;
              # useExperimentalGPUDriver = true;
	      # experimentalGPUInstallMode = "driver";
	      # experimentalGPUInstallMode = "overlay";
	    };
	    boot.loader.efi.canTouchEfiVariables = false;
	    networking.hostName = "galvatron";
	    sound.enable = false;
	  }
	  ./galvatron/hardware-configuration.nix
          inputs.apple-silicon.nixosModules.apple-silicon-support
          home-manager.nixosModules.home-manager
          {
	    home-manager.useGlobalPkgs = true;
	    home-manager.useUserPackages = true;
	    home-manager.users.mir = import ./home.nix;
          }
        ];
      };
      starscream = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          ./configuration.nix {
            networking.hostName = "starscream";
	    boot.loader.efi.canTouchEfiVariables = true;
	    sound.enable = true;
          }
          ./hardware/starscream-hw.nix
          home-manager.nixosModules.home-manager
          {
            home-manager.useGlobalPkgs = true;
            home-manager.useUserPackages = true;
            home-manager.users.mir = import ./home.nix;
            # Optionally, use home-manager.extraSpecialArgs to pass arguments to home.nix
          }
        ];
      };
      knockout = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          ./configuration.nix {
            networking.hostName = "knockout";
	    boot.loader.efi.canTouchEfiVariables = true;
	    sound.enable = true;
          }
          ./hardware/knockout-hw.nix
          home-manager.nixosModules.home-manager
          {
            home-manager.useGlobalPkgs = true;
            home-manager.useUserPackages = true;
            home-manager.users.mir = import ./home.nix;
            # Optionally, use home-manager.extraSpecialArgs to pass arguments to home.nix
          }
        ];
      };
    };
  };
}