{
  description = "My nix setup";
  inputs = {

    nixpkgs.url = "nixpkgs/nixos-unstable";

    nix-index-database = {
      url = "github:nix-community/nix-index-database";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.home-manager.follows = "home-manager";

    };

    impermanence.url = "github:nix-community/impermanence";

    home-manager = {
      inputs.nixpkgs.follows = "nixpkgs";
    };

    dns = {
      url = "github:nix-community/dns.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nix-colors.url = "github:Misterio77/nix-colors";

    purge = {
      url = "sourcehut:~rouven/purge";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    trucksimulatorbot = {
      url = "sourcehut:~rouven/trucksimulator";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    pfersel = {
      url = "sourcehut:~rouven/pfersel";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    lanzaboote = {
      url = "github:nix-community/lanzaboote/v0.3.0";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { self
    , nixpkgs
    , home-manager
    , dns
    , nix-index-database
    , agenix
    , impermanence
    , nix-colors
    , lanzaboote
    , purge
    , trucksimulatorbot
    , pfersel
    , ...
    }@attrs: {
      packages.x86_64-linux = {
        iso = self.nixosConfigurations.iso.config.system.build.isoImage;
        # thinkpad = self.nixosConfigurations.thinkpad.config.system.build.toplevel;
        jmri = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/jmri { };
        adguardian-term = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/adguardian-term { };
        matrix-authentication-service = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/matrix-authentication-service { };
        pww = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/pww { };
        gnome-break-timer = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/gnome-break-timer { };
        hashcash-milter = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/hashcash-milter { };
        ianny = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/ianny { };
        ssh3 = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/ssh3/client.nix { };
        ssh3-server = nixpkgs.legacyPackages.x86_64-linux.callPackage ./pkgs/ssh3/server.nix { };
      };
      hydraJobs = self.packages;
      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;

      overlays.default = import ./overlays;
      nixosConfigurations = {
        thinkpad = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = attrs;
          modules = [
            ./hosts/thinkpad
            ./shared
            ./users/rouven
            home-manager.nixosModules.home-manager
            agenix.nixosModules.default
            nix-index-database.nixosModules.nix-index
            impermanence.nixosModules.impermanence
            lanzaboote.nixosModules.lanzaboote
            {
              nixpkgs.overlays = [ self.overlays.default ];
              home-manager.extraSpecialArgs = attrs;
              home-manager.users.rouven = {
                imports = [
                  nix-colors.homeManagerModules.default
                ];
              };
            }
          ];
        };
        nuc = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = attrs;
          modules = [
            nix-index-database.nixosModules.nix-index
            impermanence.nixosModules.impermanence
            agenix.nixosModules.default
            ./hosts/nuc
            ./shared
            {
              nixpkgs.overlays = [ self.overlays.default ];
            }
          ];
        };
        falkenstein = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = attrs;
          modules = [
            ./hosts/falkenstein
            ./shared
            {
              nixpkgs.overlays = [ self.overlays.default ];
            }
            nix-index-database.nixosModules.nix-index
            agenix.nixosModules.default
            purge.nixosModules.default
            trucksimulatorbot.nixosModules.default
            pfersel.nixosModules.default
          ];
        };
        vm = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = attrs;
          modules = [
            ./hosts/vm
            ./shared
            nix-index-database.nixosModules.nix-index
          ];
        };
        iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs.inputs = attrs;
          modules = [
            ./hosts/iso
            ./shared/vim.nix
            ./shared/tmux.nix
            ./shared/zsh.nix
            nix-index-database.nixosModules.nix-index
          ];
        };
      };
    };
}