these 2 derivations will be built:
  /nix/store/g0c1719yif1z2hcgxm7hgx4dwnfwl3q8-nix-grpc-store-0.2.3.drv
  /nix/store/cv4qq3y9bq7yifnx56585ls9930vvcfk-nix-grpc-store-dispatcher.drv