these 2 derivations will be built:
  /nix/store/pnggpgxbsb2637gw88nfqavxqwi33z1j-nix-grpc-store-0.1.0.drv
  /nix/store/d41cd42jzv9b3lw8fmb4iqfy2r43r2w0-nix-grpc-store-exit-stress.drv