{
  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;
    };
    displaylink = {
      url = "file+https://marq42.xyz/displaylink-580.zip";
      flake = false;
    };
  };
  outputs = inputs@{ 
	      self, 
	      nixpkgs,
	      nixpkgs-unstable,
	      home-manager,
	      ... }: {
    nixosConfigurations = {
      galvatron =
	let 
	  system = "aarch64-linux";
	  specialArgs = { inherit inputs; };
	  modules = [
	    ./configuration.nix {
	      services.xserver.videoDrivers = [ "modesetting" ];
	      boot.binfmt.emulatedSystems = ["x86_64-linux"];
	      hardware.asahi = {
	        peripheralFirmwareDirectory = ./galvatron/firmware;
	        # useExperimentalGPUDriver = true;
	        # experimentalGPUInstallMode = "driver";
	        # experimentalGPUInstallMode = "overlay";
	      };
	      boot.loader.efi.canTouchEfiVariables = false;
	      networking.hostName = "galvatron";
	      sound.enable = true; # only on unstable?
	    }
	    ./galvatron/hardware-configuration.nix
	    inputs.apple-silicon.nixosModules.apple-silicon-support
	    inputs.home-manager-unstable.nixosModules.home-manager
	    {
	      home-manager.useGlobalPkgs = true;
	      home-manager.useUserPackages = true;
	      home-manager.users.mir = import ./home.nix;
	      home-manager.extraSpecialArgs = specialArgs;
	    }
	  ]; # end of modules
	in
	nixpkgs-unstable.lib.nixosSystem {inherit system modules specialArgs; };
      breakdown =
	let 
          system = "x86_64-linux";
	  specialArgs = { inherit inputs; };
          modules = [
            ./configuration.nix {
              networking.hostName = "breakdown";
	      boot.loader.efi.canTouchEfiVariables = true;
	      sound.enable = true;
            }
            ./hardware/breakdown-hw.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.users.mir = import ./home.nix;
	      home-manager.extraSpecialArgs = specialArgs;
            }
          ]; # end of modules
	in
	nixpkgs.lib.nixosSystem {inherit system modules specialArgs; };
      starscream =
	let 
          system = "x86_64-linux";
	  specialArgs = { inherit inputs; };
          modules = [
            ./configuration.nix {
	      services.xserver.videoDrivers = [ "modesetting" "displaylink" ];
              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;
	      home-manager.extraSpecialArgs = specialArgs;
            }
          ]; # end of modules
	in
	nixpkgs.lib.nixosSystem {inherit system modules specialArgs; };
      knockout =
	let
          system = "x86_64-linux";
	  specialArgs = { inherit inputs; };
          modules = [
            ./configuration.nix {
	      services.xserver.videoDrivers = [ "modesetting" "displaylink" ];
	      boot.loader.efi.canTouchEfiVariables = true;
              networking.hostName = "knockout";
	      sound.enable = true;
            }
            ./hardware/knockout-hw.nix
            inputs.home-manager-unstable.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.users.mir = import ./home.nix;
	      home-manager.extraSpecialArgs = specialArgs;
            }
          ]; # end of modules
	in
	inputs.nixpkgs-unstable.lib.nixosSystem {inherit system modules specialArgs; };
    };
  };
}