{
  description = "lxsameer's universe";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    nixos-hardware.url = "github:nixos/nixos-hardware";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    utils.url = "github:numtide/flake-utils";


    # TODO: Checkout hercules
    # hercules-ci-agent.url = "github:hercules-ci/hercules-ci-agent";
    # To build and android image
    # robotnix.url = "github:danielfullmer/robotnix";
    # impermanence.url = "github:nix-community/impermanence";
  };

  outputs = { self, home-manager, nixpkgs, agenix, nixos-hardware, utils } @ inputs:
    let
      # I just use linux and currently only x86_64
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; };


      # Add a command to the shell to create the disk
      create-disk = pkgs.writeScriptBin "create-disk" ''
        #!${pkgs.stdenv.shell}

        qemu-img create -f qcow2 vdisk1 10G
      '';


      scripts = pkgs.symlinkJoin {
        name = "universe_scripts";
        paths = [
          create-disk
        ];
      };

      nativeBuildInputs = with pkgs; [
        qemu
        fish
        zstd
        scripts
      ];

    in rec{
      images = {
        majin = (nixosConfigurations.majin.extendModules {
          modules = [
            "${pkgs}/nixos/modules/installer/sd-card/sd-image-x86_64.nix"
            {
              disabledModules = [ "profiles/base.nix" ];
            }
          ];
        }).config.system.build.sdImage;
      };

      packages.${system}.majin = images.majin;


      nixosConfigurations = {
        majin = pkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [
            "${pkgs}/nixos/modules/profiles/minimal.nix"
            ./worlds/majin/configuration.nix
            home-manager.nixosModules.home-manager
            agenix.nixosModules.age
            ./worlds/base.nix
            #hercules-ci-agent.nixosModules.multi-agent-service
          ];
          specialArgs = { inherit inputs; };
        };
      };

      devShells.${system}.default = pkgs.mkShell {
        inherit nativeBuildInputs;

        shellHook = ''
          fish && exit
        '';
      };

    };
}