these 2 derivations will be built:
  /nix/store/bsnpnqpl7bqaxm14n4lacwrs2lbdx68n-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/p4jcmq4lrh62mngnnnqwdinzipsrw72y-nix-grpc-store-dispatcher.drv