these 2 derivations will be built:
  /nix/store/mdc8cnabn44x820mch44k6kq3b18hnkv-nix-grpc-store-0.2.3.drv
  /nix/store/rfjmva31abp3wx840jjaxchq0ck1g55g-nix-grpc-store-exit-stress.drv