{
  lib,
  stdenv,
  fetchFromGitHub,
  rustPlatform,
  libiconv,
  darwin,
  zlib,
}:
rustPlatform.buildRustPackage (finalAttrs: let
  cargoToml = fromTOML (builtins.readFile (finalAttrs.src + "/Cargo.toml"));
  cargoLock = finalAttrs.src + "/Cargo.lock";
in {
  pname = "tokei";
  version = cargoToml.package.version;

  src = fetchFromGitHub {
    owner = "XAMPPRocky";
    repo = "tokei";
    rev = "v13.0.0-alpha.8";
    hash = "sha256-jCI9VM3y76RI65E5UGuAPuPkDRTMyi+ydx64JWHcGfE=";
  };

  cargoLock.lockFile = cargoLock;

  patches = [
    ./skel.patch
    ./why3.patch
  ];

  buildInputs = lib.optionals stdenv.isDarwin [
    libiconv
    darwin.Security
  ];

  checkInputs = lib.optionals stdenv.isDarwin [zlib];

  # enable all output formats
  buildFeatures = ["all"];
})