these 2 derivations will be built:
  /nix/store/ar1s93mf141iakq1712wli8xxw6gg1bk-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/x1d1cp244zlmyqxsrvb130sy1fyhzi1h-nix-grpc-store-exit-stress.drv