{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    nixos-generators = {
      url = "github:nix-community/nixos-generators";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    systems.url = "github:nix-systems/default";
    flake-utils = {
      url = "github:numtide/flake-utils";
      inputs.systems.follows = "systems";
    };
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { nixpkgs, nixos-generators, ... }@inputs:
    inputs.flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          config.allowUnfree = true;
        };
        user = "admin";
        self = inputs.self.packages.${system};
      in
      {
        packages = {
          nixosConfigurations = builtins.mapAttrs (name: modules:
            nixpkgs.lib.nixosSystem {
              specialArgs = { inherit inputs self user system; };
              inherit system modules;
            }
          ) self.nixosModules;
          nixosModules = (builtins.mapAttrs (name: modules: [ ./configuration ./host/${name} ] ++ modules) {
            server = [ ] ;
          });
          image = nixos-generators.nixosGenerate {
            system = "x86_64-linux";
            format = "qcow-efi";
            specialArgs = { inherit inputs self user system; };
            modules = self.nixosModules.server;
          };
        };
      });
}