these 2 derivations will be built:
  /nix/store/dp2ixh2ry3nmagnq861c9wv7k8yh2n08-nixos-test-driver-pg_graphql.drv
  /nix/store/li0rmmi1nh07064fb7aigrhjd25w9dvh-vm-test-run-pg_graphql.drv