these 2 derivations will be built:
  /nix/store/46gqc8rfwp0m85bgkhm77zhbprhhxd07-nix-grpc-store-0.2.3.drv
  /nix/store/3a2lw2v5gmd0hnal6a36vkmgfayma6wv-nix-grpc-store-dispatcher.drv