these 2 derivations will be built:
  /nix/store/fdifwgln6a4pq15qc9gmyafs2mja3y48-nix-grpc-store-0.2.2.drv
  /nix/store/rrzm8sdhz6x2z343yvr45n8b1chvl949-nix-grpc-store-exit-stress.drv