{
  description = "romodoro builder";

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

  outputs = { self, nixpkgs }:
    let
      supportedSystems =
        [
          "x86_64-linux"
          "x86_64-darwin"
          "aarch64-linux"
          "aarch64-darwin"
        ];

      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;

      nixpkgsFor = forAllSystems (system: import nixpkgs {
        inherit system;
      });

    in
    {

      packages = forAllSystems (system:
        let
          pkgs = nixpkgsFor.${system};
        in
        {
          default = pkgs.rustPlatform.buildRustPackage {
            pname = "dttyper";
            version = "1.4.3";
            src = ./.;

            nativeBuildInputs = with pkgs; [
              libiconv
              pkg-config
            ];
            buildInputs = with pkgs; [
              openssl
            ];
            cargoLock.lockFile = ./Cargo.lock;
          };
        });

      nixosModules.default = { config, lib, pkgs, ... }:
        with lib;
        let
          cfg = config.services.prometheus.exporters.i2pd;
        in
        {
          options.programs.dttyper = {
            enable = mkEnableOption "Enable dttyper";

            default_language = mkOption {
              type = types.str;
              default = "english1000";
            };
            server = mkOption {
              type = types.str;
              # TODO add checking for url in config
              default = "http://localhost:8086";
            };
            token = mkOption {
              type = types.str;
              # TODO add tokeFile
            };
            bucket = mkOption {
              type = types.str;
              default = "dttyper";
            };

            org = mkOption {
              type = types.str;
            };

            keyboard = mkOption {
              type = types.str;
              default = "Generic";
            };
          };


          config = mkIf cfg.enable {
            # todo add variables to ~/.config/dttyper
          };
        };



      devShells.default =
        with nixpkgs; mkShell
          {
            LIBCLANG_PATH = "${pkgs.llvmPackages_17.libclang.lib}/lib";
            RUST_BACKTRACE = 1;
            RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
            OPENSSL_NO_VENDOR = 1;
            packages = with pkgs; [
              rustc
              cargo
              rustfmt
              rust-analyzer
              clippy
              rustup
              pkg-config
              openssl
              libiconv
            ];
          };
    };
}