these 2 derivations will be built:
  /nix/store/46gqc8rfwp0m85bgkhm77zhbprhhxd07-nix-grpc-store-0.2.3.drv
  /nix/store/il279ywmbzk1jnlrsg4isak477rpw0sz-nix-grpc-store-exit-stress.drv