these 2 derivations will be built:
  /nix/store/p9rgf544lckm90602cq40l0ab5w9wb22-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/azf12160520wg15li0dd3bf9hml3yfdp-nix-grpc-store-exit-stress.drv