these 2 derivations will be built:
  /nix/store/j2z1a58sqwak099kcpz209vaaqwy2ncw-nixos-test-driver-pg_partman.drv
  /nix/store/982ix5slc81km2ypq1zvac72vxpfyf1q-vm-test-run-pg_partman.drv