these 2 derivations will be built:
  /nix/store/sx2hkd32zq19zzwgi9fvmly9s009rsdz-nix-grpc-store-0.1.0.drv
  /nix/store/cvdfl0kibfnmqskn02vjfcfhrw067qzz-nix-grpc-store-exit-stress.drv