these 2 derivations will be built:
  /nix/store/f8wbsb56kyavgs5768d92hgzhq6habkm-nix-grpc-store-0.2.3.drv
  /nix/store/a2q64q6inw5p30jk5camb1r26j3l6xnz-nix-grpc-store-dispatcher.drv