these 2 derivations will be built:
  /nix/store/m9r2dmdwsi7zsm205l1df1vvkqlibfjw-nix-grpc-store-0.2.3.drv
  /nix/store/bw37pisfpka2y42q8ry49s3k2g0b4sfk-nix-grpc-store-exit-stress.drv