these 2 derivations will be built:
  /nix/store/04d8afcmivj38nc17ncyyf6lvz2zwvpm-nix-grpc-store-0.1.0.drv
  /nix/store/gjcdfri0b4pk60jkvpw1kspjy26w5plz-nix-grpc-store-exit-stress.drv