these 2 derivations will be built:
  /nix/store/0db4fnrvcqv4pqqi0x7d1cwn9vh3zla5-nix-grpc-store-0.1.0.drv
  /nix/store/ghb5smcbm50z5nf327p3933gvy03vrp0-nix-grpc-store-exit-stress.drv