{ self, inputs, ... }: {
 
    perSystem = { ... }: {
        packages.pi4-sd = self.nixosConfigurations.pi4-install-sd.config.system.build.sdImage;
    };

    flake.nixosConfigurations.pi4 = inputs.nixpkgs.lib.nixosSystem {

        system = "aarch64-linux";

        modules = [
            self.nixosModules.pi4
            self.nixosModules.pi4-hardware
            self.diskoConfigurations.pi4
        ];
    };

    flake.nixosConfigurations.pi4-install = inputs.nixpkgs.lib.nixosSystem {

        system = "aarch64-linux";

        modules = [
            self.nixosModules.pi4-core
            self.nixosModules.pi4-hardware
        ];
    };

    flake.nixosConfigurations.pi4-install-sd = inputs.nixpkgs.lib.nixosSystem {

        system = "aarch64-linux";

        modules = [
            self.nixosModules.pi4-install-sd
            self.nixosModules.pi4-hardware
        ];
    };

    flake.nixosConfigurations.pi4-install-disko = inputs.nixpkgs.lib.nixosSystem {

        system = "aarch64-linux";

        modules = [
            self.nixosModules.pi4-install-disko
            self.nixosModules.pi4-hardware
            self.diskoConfigurations.pi4
        ];
    };
}