these 2 derivations will be built:
  /nix/store/ww6y314lrw470pxprycrp0fv8p2blk5l-nix-grpc-store-0.2.3.drv
  /nix/store/r0acah0kyaan9j6x78mdxlc1syyb1485-nix-grpc-store-exit-stress.drv