these 2 derivations will be built:
  /nix/store/w5klc599ziw1snk96wfmk6zl3qlz5338-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/vhqqmdgwhgq5k2h7aalabxgygvwhjpv1-nix-grpc-store-exit-stress.drv