these 2 derivations will be built:
  /nix/store/z88lazp2ccfz3vsv7hv0dzx4ahkhsl3a-nix-grpc-store-0.2.2.drv
  /nix/store/9s7yrd2mi4vkp0yzn29hbbf192vi15rm-nix-grpc-store-exit-stress.drv