nixpkgs/pkgs/tools/graphics/graphviz/default.nix

import ./base.nix rec {
  rev = "stable_release_${version}";
  version = "2.40.1";
  sha256 = "1xjqq3g2n6jgwp5xzyvibgrxawlskkpam69fjjz9ksrrjas2qwzj";
 }