these 2 derivations will be built:
  /nix/store/s1kgpxpn72278cznz0ljwazg5ynw6k9a-nix-grpc-store-0.2.3.drv
  /nix/store/6080a3cvnbhrdsj3pkr3wbnpf9bh19ng-nix-grpc-store-exit-stress.drv