these 2 derivations will be built:
  /nix/store/5imjg549c1mcjlaglj3msg91lm2j5786-nixos-test-driver-timescaledb.drv
  /nix/store/khv8c91b94fyvvd6cm79h55vw1dqjwfc-vm-test-run-timescaledb.drv