these 4 derivations will be built:
  /nix/store/msiv2xgc20ask836v2b37gq5za0risxc-clan-cli-source.drv
  /nix/store/k2z9lkgm1b1ai26knrq8kwxnyzc2hfak-clan-cli.drv
  /nix/store/mbllzskriv4vipwb56b9y92vx8g7yr1z-tofu.drv
  /nix/store/5ryppl0syg6malr63yfs6x1l93dnzc49-cache-new.drv