Machines created with third_party.nixos would not be added to the
buildkite pipeline because they are not derivations.
Closes: https://git.snix.dev/snix/snix/issues/80
Change-Id: I1e107b83e352244b229e498adc00df373742fb1a
Reviewed-on: https://cl.snix.dev/c/snix/+/30666
Reviewed-by: Florian Klink <flokli@flokli.de>
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: besadii
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>