these 2 derivations will be built:
  /nix/store/54zm8znyzih3x1jsj3pj9capbik6il26-nixos-test-driver-pg_graphql.drv
  /nix/store/wrz6qpgf8nc8jk0ymz16r43l06jq7w12-vm-test-run-pg_graphql.drv