these 2 derivations will be built:
  /nix/store/sh61jr81z6jhks393gylk91bfgayaxla-nix-grpc-store-0.2.3.drv
  /nix/store/gznhkb3i2kqbiwl2r5hl60c94s28cqsk-nix-grpc-store-exit-stress.drv