these 2 derivations will be built:
  /nix/store/1fm1sihzxyb3qrif46wdkqxb5kspj7vp-nix-grpc-store-0.2.0.drv
  /nix/store/q00rr0axyy4s91nzymgrdfagc0qxwwaq-nix-grpc-store-exit-stress.drv