these 2 derivations will be built:
  /nix/store/l595sn19a428f83n4a6z3ljfrc2ivbv0-nixos-test-driver-pg_partman.drv
  /nix/store/dlvcxjjdpfm6m9lss4gj76rs044vfmia-vm-test-run-pg_partman.drv