{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    disko.url = "github:nix-community/disko";
    disko.inputs.nixpkgs.follows = "nixpkgs";
    nixos-facter-modules.url = "github:numtide/nixos-facter-modules";
    rhemawave.url = "git+https://codeberg.org/RhemaWave-Technologies/RhemaWave.git";
    rhemawave-dev.url = "git+https://codeberg.org/RhemaWave-Technologies/RhemaWave.git?ref=dev";
    nixos-raspberrypi.url = "github:nvmd/nixos-raspberrypi/main";
  };

  outputs =
    {
      self,
      nixpkgs,
      disko,
      nixos-facter-modules,
      rhemawave,
      rhemawave-dev,
      nixos-raspberrypi,
      ...
    }@inputs:
    let
      system = "x86_64-linux";

      mkKioskSystem = { system, rhemawave, upgradeFlakeRef, extraModules ? [], diskModule, enableAutoUpgrade ? true, extraSpecialArgs ? {}}:
        nixpkgs.lib.nixosSystem {
          inherit system;

          specialArgs = {
            inherit rhemawave;
            inherit upgradeFlakeRef;
          } // extraSpecialArgs;

          modules = [
            ./configuration.nix
            disko.nixosModules.disko
            diskModule 
            nixos-facter-modules.nixosModules.facter
            { facter.reportPath = ./facter.json; }
            rhemawave.nixosModules.default
          ] ++ extraModules;
        };

      mkRpiKioskSystem = { rhemawave, upgradeFlakeRef, extraModules ? [], enableAutoUpgrade ? true }:
        nixos-raspberrypi.lib.nixosSystem {
          specialArgs = {
            inherit rhemawave upgradeFlakeRef;
            inherit nixos-raspberrypi;
          };

          modules = [
            ({ ... }: {
              imports = with nixos-raspberrypi.nixosModules; [
                sd-image
                raspberry-pi-5.base
                raspberry-pi-5.page-size-16k
                raspberry-pi-5.display-vc4
              ];
            })
            ./configuration.nix
            rhemawave.nixosModules.default
            {
              # system.autoUpgrade = {
              #   enable = enableAutoUpgrade;
              #   flake = upgradeFlakeRef;
              #   dates = "*:00/10";
              #   allowReboot = true;
              #   flags = [ "--refresh" ];
              # };
              boot.loader.systemd-boot.enable = nixpkgs.lib.mkForce false;
              boot.loader.efi.canTouchEfiVariables = nixpkgs.lib.mkForce false;
              boot.loader.raspberry-pi.bootloader = "kernel";

              nix.settings.extra-substituters = [
                "https://nixos-raspberrypi.cachix.org"
              ];
              nix.settings.extra-trusted-public-keys = [
                "nixos-raspberrypi.cachix.org-1:4iMO9LXa8BqhU+Rpg6LQKiGa2lsNh/j2oiYLNOQ5sPI="
              ];
            }
          ] ++ extraModules;
        };
    in
    {
      packages.x86_64-linux.rhemawavekiosk = self.nixosConfigurations.rhemawavekiosk.config.system.build.toplevel;
      packages.x86_64-linux.rhemawavekiosk-dev = self.nixosConfigurations.rhemawavekiosk-dev.config.system.build.toplevel;
      packages.x86_64-linux.rhemawavekiosk-commercial = self.nixosConfigurations.rhemawavekiosk-commercial.config.system.build.toplevel;
      packages.x86_64-linux.rhemawavekiosk-android = self.nixosConfigurations.rhemawavekiosk-android.config.system.build.toplevel;
      nixosConfigurations = {
        rhemawavekiosk = mkKioskSystem {
          system = "x86_64-linux";
          rhemawave = rhemawave;
          diskModule = ./disk-config.nix;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git#rhemawavekiosk";
          extraModules = [];
        };
        rhemawavekiosk-dev = mkKioskSystem {
          system = "x86_64-linux";
          rhemawave = rhemawave-dev;
          diskModule = ./disk-config.nix;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git?ref=dev#rhemawavekiosk-dev";
          extraModules = [];
        };
        rhemawavekiosk-commercial = mkKioskSystem {
          system = "x86_64-linux";
          rhemawave = rhemawave;
          diskModule = ./commercial-disk-config.nix;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git#rhemawavekiosk-commercial";
          extraModules = [];
        };
        rhemawavekiosk-commercial-dev = mkKioskSystem {
          system = "x86_64-linux";
          rhemawave = rhemawave;
          diskModule = ./commercial-disk-config.nix;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git?ref=dev#rhemawavekiosk-commercial";
          extraModules = [];
        };
        rhemawavekiosk-android = mkKioskSystem {
          system = "x86_64-linux";
          rhemawave = rhemawave;
          diskModule = ./disk-config.nix;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git#rhemawavekiosk-android";
          extraModules = [./rotated_display.nix  ];
        };
        rhemawavekiosk-rpi = mkRpiKioskSystem {
          rhemawave = rhemawave;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git#rhemawavekiosk-rpi";
        };
        rhemawavekiosk-rpi-dev = mkRpiKioskSystem {
          rhemawave = rhemawave-dev;
          upgradeFlakeRef = "git+https://codeberg.org/RhemaWave-Technologies/KioskConfig.git?ref=dev#rhemawavekiosk-rpi-dev";
        };
        usb-iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit inputs;
            inherit self;
          };
          modules = [
            "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
            disko.nixosModules.disko
            ./iso-config.nix
            ./disk-config.nix
            ({ pkgs, ... }: {
              environment.systemPackages = [
                disko.packages.${system}.default
              ];
              isoImage.storeContents = [
                self.packages.x86_64-linux.rhemawavekiosk
              ];
              environment.etc."disko-config.nix".source = ./disk-config.nix;
            })
          ];
        };
        commercial-usb-iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit inputs;
            inherit self;
          };
          modules = [
            "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
            disko.nixosModules.disko
            ./commercial-iso-config.nix
            ./commercial-disk-config.nix
            ({ pkgs, ... }: {
              environment.systemPackages = [
                disko.packages.${system}.default
              ];
              isoImage.storeContents = [
                self.packages.x86_64-linux.rhemawavekiosk-commercial
              ];
              environment.etc."disko-config.nix".source = ./commercial-disk-config.nix;
            })
          ];
        };

        android-iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit inputs;
            inherit self;
          };
          modules = [
            "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
            disko.nixosModules.disko
            ./iso-config.nix
            ./disk-config.nix
            ({ pkgs, ... }: {
              environment.systemPackages = [
                disko.packages.${system}.default
              ];
              isoImage.storeContents = [
                self.packages.x86_64-linux.rhemawavekiosk-android
              ];
              environment.etc."disko-config.nix".source = ./disk-config.nix;
            })
          ];
        };
        dev-iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit inputs;
            inherit self;
          };
          modules = [
            "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
            disko.nixosModules.disko
            ./dev-iso.nix
            ./disk-config.nix
            ({ pkgs, ... }: {
              environment.systemPackages = [
                disko.packages.${system}.default
              ];
              isoImage.storeContents = [
                self.packages.x86_64-linux.rhemawavekiosk-dev
              ];
              environment.etc."disko-config.nix".source = ./disk-config.nix;
            })
          ];
        };
      };
    };
}