these 2 derivations will be built:
  /nix/store/5d7ymnidmy97nczzagmbhdxd1xclq181-nix-grpc-store-0.2.2.drv
  /nix/store/rj5ld9rn46a6pf5w3vmqfjva2g9bla8d-nix-grpc-store-exit-stress.drv