these 2 derivations will be built:
  /nix/store/jvy3nqm265i268gfgg7bkmiyvavkcdvw-nix-grpc-store-0.2.0.drv
  /nix/store/k0gr57awkg48bfzyyrmps549m5mzz4dv-nix-grpc-store-exit-stress.drv