{
  description = "legdur: verify integrity of large directories over time";
  inputs = {
    utils.url = "github:numtide/flake-utils";
    naersk.url = "github:nix-community/naersk";
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
  };

  outputs = {
    self,
    nixpkgs,
    utils,
    naersk,
    flake-compat,
  }:
    utils.lib.eachDefaultSystem (system: let
      pkgs = nixpkgs.legacyPackages."${system}";
      naersk-lib = naersk.lib."${system}";
    in rec {
      # `nix build`
      packages.legdur = naersk-lib.buildPackage {
        pname = "legdur";
        root = ./.;
      };
      defaultPackage = packages.legdur;

      # `nix run`
      apps.legdur = utils.lib.mkApp {drv = packages.legdur;};
      defaultApp = apps.legdur;

      # `nix develop`
      devShell = pkgs.mkShell {
        nativeBuildInputs = with pkgs;
          [
            cacert
            cargo
            cargo-edit
            cargo-flamegraph
            cargo-outdated
            cargo-release
            cargo-tarpaulin
            cargo-watch
            clippy
            git
            llvmPackages_13.llvm
            nixpkgs-fmt
            openssh
            openssl
            pkg-config
            rustc
            rustfmt
            statix
          ]
          ++ (lib.optional stdenv.isLinux [pkgs.hotspot pkgs.perf-tools]);
        RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
      };
    });
}