{
  description = "Description for the project";

  inputs = {
    nixpkgs.url = "github:cachix/devenv-nixpkgs/rolling";
    devenv.url = "github:cachix/devenv";
  };

  nixConfig = {
    extra-trusted-public-keys = "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=";
    extra-substituters = "https://devenv.cachix.org";
  };

  outputs = inputs @ {flake-parts, ...}:
    flake-parts.lib.mkFlake {inherit inputs;} {
      imports = [
        inputs.devenv.flakeModule
      ];
      systems = ["x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"];

      perSystem = {
        config,
        self',
        inputs',
        pkgs,
        system,
        ...
      }: let
        cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
      in {
        # Per-system attributes can be defined here. The self' and inputs'
        # module parameters provide easy access to attributes of the same
        # system.

        # Rust package
        packages.default = pkgs.rustPlatform.buildRustPackage {
          inherit (cargoToml.package) name version;
          src = ./.;
          cargoLock.lockFile = ./Cargo.lock;
        };


        # needed for devenv up
        packages.devenv-up = self'.devShells.default.config.procfileScript;

        devenv.shells.default = {
          name = "my-project";

          imports = [
            # This is just like the imports in devenv.nix.
            # See https://devenv.sh/guides/using-with-flake-parts/#import-a-devenv-module
            # ./devenv-foo.nix
          ];

          # https://devenv.sh/reference/options/
          packages = [config.packages.default];

          languages.rust.enable = true;

          enterShell = ''
            hello
          '';
        };
      };
      flake = {
        # The usual flake attributes can be defined here, including system-
        # agnostic ones like nixosModule and system-enumerating ones, although
        # those are more easily expressed in perSystem.
      };
    };
}