these 2 derivations will be built:
  /nix/store/39fk40xki34l0yg2rkg8yvgkjnvqdv98-nix-grpc-store-0.1.0.drv
  /nix/store/hk2hdly51r6dmm48sxmczxxmh7d88cjb-nix-grpc-store-exit-stress.drv