these 2 derivations will be built:
  /nix/store/apagcy3qz01bl8khzr6mj6pk0hfs31y3-nix-grpc-store-0.2.0.drv
  /nix/store/ris4jg3zp55xzmdr1201a7qws0f7zf01-nix-grpc-store-exit-stress.drv