these 2 derivations will be built:
  /nix/store/syb18r85z3bl6y2d61hprsgky2wrkg4z-nix-grpc-store-0.1.0.drv
  /nix/store/65ay67lsga7alw9y2vgxfyjbl44hzrkm-nix-grpc-store-exit-stress.drv