these 4 derivations will be built:
  /nix/store/x19pnp9q6g01z5673cxx45zv4k4cskcj-clan-cli-source.drv
  /nix/store/858pixav4qf6pa6akqwyc0gkkxifrba9-clan-cli.drv
  /nix/store/py1k91jlgagv7zi3qhjjyri9sw121p85-tofu.drv
  /nix/store/m0p3lfwglkvdvz5phbm3bpvy05290nk0-cache-new.drv