these 2 derivations will be built:
  /nix/store/6apjayplckilapwlis9z6am5ys75hslb-nix-grpc-store-0.2.2.drv
  /nix/store/6s5ag6zijy4jc782irxja027yn9vr163-nix-grpc-store-exit-stress.drv