these 4 derivations will be built:
  /nix/store/lrz70h9hr4i4zcnc8v7m4cgswca8pmb8-clan-cli-source.drv
  /nix/store/5yj2vvj2mpdpln8ybwidjzy2n2d17id4-clan-cli.drv
  /nix/store/k3hqaff0a9xsqpcjypkjkdkywkx7k17g-tofu.drv
  /nix/store/vqx9zjv7q22p0lkv7wqml6dmxjd2h4ds-cache-new.drv