these 2 derivations will be built:
  /nix/store/86qjswk0i9k30hlzfns6a83ickf2wvmh-nix-grpc-store-0.1.0.drv
  /nix/store/d0vsvd4cfyh025sb4jgcg2lwvv29ibrr-nix-grpc-store-exit-stress.drv