these 2 derivations will be built:
  /nix/store/2rw3a84w80f5gr3ffzz3ml3h9rxkczvp-nix-grpc-store-0.2.3.drv
  /nix/store/gil85wc41xf56y4dx3di4qwydn9p1jai-nix-grpc-store-exit-stress.drv