these 2 derivations will be built:
  /nix/store/ppcnxam1dlrkn694ra06m551nv9336ps-nix-grpc-store-0.1.1.drv
  /nix/store/0rvx17xyvhc8b0ybg6lq4dbpa84x6nrs-nix-grpc-store-dispatcher.drv