these 2 derivations will be built:
  /nix/store/jhm7m8hw4wynqw68624y2h1lwkq5mswf-nix-grpc-store-0.1.0.drv
  /nix/store/zp25cwhnlim96rhgpga0sz0jj99hgy1s-nix-grpc-store-exit-stress.drv