these 3 derivations will be built:
  /nix/store/7wh78hh38k36rwmvq2ar69nbbqd21rkb-ck-0.8.1-vendor.drv
  /nix/store/gbpa270d1dadw70j5zzd616xkxp1ivms-ck-0.8.1.drv
  /nix/store/9gkj970m3r05zws880c3wscwwaha3v5w-check-ck.drv