{
  stdenv,
  fetchFromGitHub,
}:
stdenv.mkDerivation (finalAttrs: {
  pname = "spam-filter";
  version = "2.0.3";

  src = fetchFromGitHub {
    owner = "stalwartlabs";
    repo = "spam-filter";
    tag = "v${finalAttrs.version}";
    hash = "sha256-NhD/qUiGhgESwR2IOzAHfDATRlgWMcCktlktvVfDONk=";
  };

  buildPhase = ''
    bash ./build.sh
  '';

  installPhase = ''
    mkdir --parents "$out"
    cp ./spam-filter.toml "$out/"
  '';
})