these 4 derivations will be built:
  /nix/store/v94v8f1s2difdpwgrsz93xz8bl8ids71-clan-cli-source.drv
  /nix/store/nwzb120270v58iabmlp42ja451lj6fnv-clan-cli.drv
  /nix/store/l34pk94z584lcc59lqavfh0nd90cyafg-tofu.drv
  /nix/store/fwm2s9a29j92pmh9kaavr331hl5yijl2-cache-new.drv