these 2 derivations will be built:
  /nix/store/2dhhl03c523mh7swi5y34hgsc303vazb-nix-grpc-store-0.2.3.drv
  /nix/store/n9gh99d1lpbjwylfxahvp8nw02wjikyv-nix-grpc-store-exit-stress.drv