these 2 derivations will be built:
  /nix/store/49ljm1a7lls92ypzcpc8wg0baj85s7ss-nix-grpc-store-0.2.2.drv
  /nix/store/hzq7q56l9aq2agz1f3qcjl5ng162cnga-nix-grpc-store-dispatcher.drv