these 2 derivations will be built:
  /nix/store/fq6vrqf36z2h66abmf7xil1ipcwznknm-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/5qwylb15ck83kkagprj5p6nvxl4bwcqf-nix-grpc-store-exit-stress.drv