these 4 derivations will be built:
  /nix/store/wjcza24k4z3gnjvkgczg5qbicf30p9pl-clan-cli-source.drv
  /nix/store/kl56xjr2qdh0sik16hx2yn9sgavxxzqy-clan-cli.drv
  /nix/store/rq9nxwadk47dibnsqyb8mjm3avz3aabm-tofu.drv
  /nix/store/zy3da9vhrpd32xfx7k7brrm5lwfrxxdj-dns.drv