these 2 derivations will be built:
  /nix/store/crq643f0rfrxqsh05ls9kiq2gffh5r0n-nix-grpc-store-0.2.1.drv
  /nix/store/lmkyzi0cvhi2aa6navpavm4daqqp1aii-nix-grpc-store-exit-stress.drv