these 2 derivations will be built:
  /nix/store/60h80hx51wxdsw54r0k0qcz0c9aif47v-nix-grpc-store-0.2.3.drv
  /nix/store/2yxsl0249rrgjrvi1bfqpsmiry5yiwpy-nix-grpc-store-exit-stress.drv