these 2 derivations will be built:
  /nix/store/sc0ymwqpxp9r3g6mdl8ki2qw8k83z01s-nix-grpc-store-0.2.1.drv
  /nix/store/jdzd1vj57f9wy8yfchh00msfsafk4gb7-nix-grpc-store-exit-stress.drv