{
  description = "Malte Tammena's system configuration";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  inputs.nixos-hardware.url = "github:NixOS/nixos-hardware";
  inputs.home-manager.url = "github:nix-community/home-manager";
  inputs.emulator-2a.url = "github:MalteT/2a-emulator/develop";
  inputs.gruvbox-material-gtk = {
    url = "github:sainnhe/gruvbox-material-gtk";
    flake = false;
  };
  inputs.rip = {
    url = "github:nivekuil/rip";
    flake = false;
  };

  outputs = { self, nixpkgs, nixos-hardware, home-manager, ... }@inputs:
    let
      system = "x86_64-linux";
      username = "malte";

      emulator-2a = inputs.emulator-2a.packages."${system}".emulator-2a;

    in rec {

      nixosModules.lenovo-thinkpad-p1 = { pkgs, config, lib, ... }: {
        imports = [
          nixos-hardware.nixosModules.common-cpu-intel
          nixos-hardware.nixosModules.common-gpu-nvidia
          nixos-hardware.nixosModules.common-pc-laptop
          nixos-hardware.nixosModules.common-pc-laptop-ssd
          nixos-hardware.nixosModules.common-pc-laptop-acpi_call
          ./system/lenovo-thinkpad-p1.nix
        ];
      };

      homeManagerConfigurations."${username}" =
        home-manager.lib.homeManagerConfiguration {
          inherit system username;
          configuration = ./malte/home.nix;
          homeDirectory = "/home/${username}";
        };

      nixosModules.home-manager = { pkgs, ... }: {
        home-manager.verbose = true;
        home-manager.useGlobalPkgs = true;
        home-manager.useUserPackages = true;
        home-manager.users."${username}".imports = [ ./malte/home.nix ];
        nixpkgs.overlays = [
          (import ./overlays/logisim.nix)
          #(import ./overlays/tdesktop.nix)
          #(import ./overlays/sway.nix)
        ];
      };

      nixosConfigurations.helix-texta = nixpkgs.lib.nixosSystem {
        inherit system;
        modules = [
          ./system/configuration.nix
          ./system/light-actkbd.nix
          self.nixosModules.lenovo-thinkpad-p1
          home-manager.nixosModules.home-manager
          self.nixosModules.home-manager

          ({ pkgs, ... }: {
            system.configurationRevision =
              nixpkgs.lib.mkIf (self ? rev) self.rev;
            nixpkgs.config.allowUnfree = true;

            environment.systemPackages = [ emulator-2a ];

            nix.registry.nixpkgs.flake = nixpkgs;
            nix.package = pkgs.nixUnstable;
            nix.extraOptions = ''
              experimental-features = nix-command flakes
            '';
          })
        ];
      };
    };
}