these 2 derivations will be built:
  /nix/store/nn34rhs8gis1dirwd40jdy94khbvznz6-nix-grpc-store-0.2.2.drv
  /nix/store/hz4idi421p1w71ygffw4882iqw30s5z7-nix-grpc-store-exit-stress.drv