{
  description = "A simple bit rot checker";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    naersk = {
      url = "github:nix-community/naersk";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    inputs@{
      self,
      nixpkgs,
      flake-parts,
      naersk,
      ...
    }:
    flake-parts.lib.mkFlake { inherit inputs; } {
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];

      perSystem =
        { pkgs, system, ... }:
        let
          naersk' = pkgs.callPackage naersk { };
        in
        rec {
          # nix build
          # nix run . -- --help
          packages.default = packages.brck;

          # nix build .#brck
          # nix run .#brck -- --help
          packages.brck = naersk'.buildPackage {
            name = "brck";
            src = builtins.path {
              path = ./.;
              name = "brck";
            };
            meta.mainProgram = "brck";
          };

          # nix develop
          devShells.default = pkgs.mkShell {
            nativeBuildInputs = with pkgs; [
              rustc
              cargo
              rustfmt
              clippy
              cargo-audit
              cargo-edit
              rust-analyzer
            ];
          };

          # nix fmt
          formatter = pkgs.nixfmt-tree;
        };
    };
}