these 2 derivations will be built:
  /nix/store/5g0nlhs6i0j93q8bqp2qfz0pp8ay6n28-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/jhhpvn00z0zg0crg0nxc28wfpsbwk6mv-nix-grpc-store-exit-stress.drv