{
  description = "A command-line utility and Rust library to compute the WPA pre-shared key of a Wi-Fi SSID and passphrase";

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

  outputs = { self, nixpkgs, flake-utils, naersk, ... }@inputs:
    flake-utils.lib.eachDefaultSystem (system:
      let
	pkgs = import nixpkgs {
	  inherit system;
	  config = { };
	  overlays = [ ];
	};
	naersk' = pkgs.callPackage naersk { };
      in rec {
	# nix build
	# nix run . -- --help
	packages.default = packages.wpa-psk-cli;

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

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