these 2 derivations will be built:
  /nix/store/cimg0sc2l059vsd4dq81f3l6i9xncapx-nix-grpc-store-0.1.0.drv
  /nix/store/db4vk59dmrajj06hw0bp99szp837nv6k-nix-grpc-store-exit-stress.drv