these 2 derivations will be built:
  /nix/store/w7rp48qzcghwn91lilkai4kd1i3772wp-nix-grpc-store-0.2.2.drv
  /nix/store/inb60m5ggpchxf6rvi2ni6mzqk6jdnf7-nix-grpc-store-exit-stress.drv