these 2 derivations will be built:
  /nix/store/hl1lwxk1vhsjifg7wsg0drpq3bxbafi1-nix-grpc-store-0.2.3.drv
  /nix/store/p99g47yncw3y91pw6r1firfyhwn7jxpz-nix-grpc-store-exit-stress.drv