these 2 derivations will be built:
  /nix/store/2f6lid1hp29yjbfhh7qh0ffbfbrxk8va-nixos-test-driver-pg_partman.drv
  /nix/store/87184k0i5qzknlj0k0kfzha5np4dhifj-vm-test-run-pg_partman.drv