these 2 derivations will be built:
  /nix/store/fvgbdac1w28lifwb7qh02hvzsilavl83-nix-grpc-store-0.2.3.drv
  /nix/store/hlpy34q2a6wg9k39hdr2gda4yv6d5ara-nix-grpc-store-exit-stress.drv