shortest path to bootstrap gauche?

Hi,

afaiu each gauche version depends on the previous version to be built
from source?
did anybody try to build the complete chain automatically?
are there any shortcuts one could take?

background:
https://bootstrappable.org/
Reflections on trusting trust
https://dl.acm.org/doi/10.1145/358198.358210

Best regards
Jens